Carex (Kobresia pygmaea) 1 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 12a (cult) Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 12b (cult) Rotorua NZ 151120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 1a SE Mijas, Andalusia SP 120327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 1b SE Mijas, Andalusia SP 120327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 2a Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 2b Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 3a Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 3b Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 5a Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 5b Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 5c Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 6a NW of Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 6b NW of Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 7 NW of Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acuta 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acuta 5 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acutiformis 2 Egtved Å near Nybjerg Mölle, Jylland DK 130630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alba 6 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alligata 1 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appropinquata 6 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aquatilis ssp aquatilis 5 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aquatilis ssp aquatilis 6 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 3 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 9 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arenaria 1 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arenaria 4 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atherodes 1 Södra Paipis, Sibby Fi 120729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atherodes 2 Södra Paipis, Sibby Fi 120729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atherodes 4 Södra Paipis, Sibby Fi 120729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atherodes 5 Södra Paipis, Sibby Fi 120729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atherodes 6 Södra Paipis, Sibby Fi 120729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata 3 Kärkevagge, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata 4 Kärkevagge, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata 6 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata ssp aterrima 1 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata ssp aterrima 2 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 2 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 3 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 4 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 5 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 6 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 7 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 8 Børselven, Porsanger, Finnmark, Norway 220723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 10 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 2 Kjörsvik, Norway 820805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 8 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 5 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 6 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 8 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 9 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brizoides 1 N of Kuldiga, Latvia 100715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brizoides 2 N of Kuldiga, Latvia 100715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bromoides 1 Storrs, Connecticut 900526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 1 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 11 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex canescens 1 Tåssjö Sk 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex canescens 3 Tåssjö Sk 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex caryophyllea 3 Västra Karaby Sk 140426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex caryophyllea 4 Västra Karaby Sk 140426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cespitosa 1 Svärdsnäs, Sandemar, Södermanland 030618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 1 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 2 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 9 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf brachystachys 1 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf brachystachys 2 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf festucacea 3 Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf gracillima 1 Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex chordorrhiza 1 S of Brandbergen, Österhaninge, Södermanland 990615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 2 Drubazas, Latvia 060707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 3 Drubazas, Latvia 060707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 4 Drubazas, Latvia 060707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 2 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 3 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 4 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 5 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 6 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 7 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disticha 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp leersii 1 Nysted Havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp leersii 2 E of Rödby Havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp leersii 3 E of Rödby Havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp leersii 4 Nysted Havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex echinata 2 Rammsjöstrand, Västra Karup Sk 130624 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp omskiana 1 Hattemalanjärvi Fi 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 4 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 5 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum Kämpinge, Räng, Skåne 850602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 10 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 2 western coast of Saltholm DK 130810 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 3 western coast of Saltholm DK 130810 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 4 Skanör Sk 130901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 5 Hoburgen, Sundre, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 6 Hoburgen, Sundre, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ferruginea 1 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flacca ssp flacca 1 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flacca ssp flacca 4 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flacca ssp flacca 5 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex fuliginosa ssp misandra 4 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex fuliginosa ssp misandra 5 Kopparåsen, Torne Lappmar 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glacialis 1 Kopparåsen, Torne Lappmar 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glacialis 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glacialis 3 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glareosa 3 Langfjordbotn, Finnmark, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glareosa Adventdalen, Svalbard 790726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glareosa, Carex subspathacea, Carex ursina Adventdalen, Svalbard 790726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex grayi 5 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 1 Kungsmarken, Södra Sandby, Skåne 820617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 3 Nedrema, Estonia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 4 Nedrema, Estonia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 1 Riksgränsen, Torne Lappmark 880704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex juncella Tollevshaugen, Norway 820803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex krausei 1 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex krausei 6 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 1 Tverrdalen-Reindalen, Svalbard 790720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 2 Tverrdalen-Reindalen, Svalbard 790720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 7 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 8 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex leiorhyncha 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex leiorhyncha 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex leiorhyncha 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lepidocarpa ssp jemtlandica 1 NW of Alskog, Gotland 980730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lepidocarpa ssp jemtlandica 2 NW of Alskog, Gotland 980730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex leporina 2 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 4 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex macloviana ssp macloviana 1 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex macloviana ssp macloviana 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex macloviana ssp subfusca 3 Kohala Mountain, Big Island, Hawaii 130728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 2 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 3 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 4 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 5 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 6 W of Sangis, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 7 W of Sangis, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 8 W of Sangis, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua Karlarp, Tjörnarp, Skåne 810723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 1 Ripagården, Hov, Skåne 820622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 10 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 11 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 12 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 13 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 14 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 16 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 17 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 18 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 19 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 2 Ripagården, Hov, Skåne 820622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 20 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 21 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 25 Svartnes, Vardø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 26 Svartnes, Vardø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 27 Svartnes, Vardø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 4 Sandflugtsdalen E Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 5 Sandflugtsdalen E Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 6 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 9 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 1 Bövertun, Norway 820730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 3 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 1 Anga, Gotland 070604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 5 Österplana, Västergötland 140529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 1 below Jeknaffo, Lule Lappmark 870716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 10 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 2 Njulla, Torne Lappmark 910712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 3 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 3 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 4 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 5 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 6 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 7 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra 4 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica (left), Carex media (right) Abisko, Torne Lappmark 910717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 7 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 22 Åhus Sk 190609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 23 Åhus Sk 190609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 24 Åhus Sk 190619 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 25 Åhus Sk 190610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 1 Nothamn, Väddö, Uppland 980630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 12 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 13 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 14 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 2 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pachystachya 1 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pachystachya 2 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paniculata 1 Benestad Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paniculata 2 Benestad Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paniculata 3 Lund Bot Garden 070625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paniculata 4 Lund Bot Garden 070625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex parallela 1 Njulla, Torne Lappmark 910712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 2 Djupviken, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 2 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 3 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 4 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 5 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 6 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 7 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 8 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pendula 1 Vejle, Jylland DK 950805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pendula 4 northwestern Romania 090616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex perraudieriana 1 Los Tilos, La Palma 070419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex perraudieriana 2 Los Tilos, La Palma 070419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 10 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 11 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 12 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 6 near Lazdukalni, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 7 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 8 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 9 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilulifera 1 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilulifera 2 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilulifera 3 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudobrizoides 2 E of Renda near Abava, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 1 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 6 Rio Clarillo Nat Park, Chile 171104 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 7 Rio Clarillo Nat Park, Chile 171104 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 8 Rio Clarillo Nat Park, Chile 171104 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pulicaris 3 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pulicaris 4 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex punctata 1 Fiskebäckskil, Bohuslän 990718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex punctata 4 Fiskebäckskil, Bohuslän 990718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 13 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex remota 1 Pålsjö, Helsingborg Sk 130813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex remota 3 Pålsjö, Helsingborg Sk 130813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex remota 4 Pålsjö, Helsingborg Sk 130813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rhynchophysa 3 W Kallislahti Fi 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 7 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 8 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 2 Sularp, Hardeberga, Skåne 920705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rufina 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rufina 2 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina Helgestö, Norway 820806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 11 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 12 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 1 Tatranská Kotlina, Slovakia 950627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 6 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 7 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex shortiana 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex shortiana 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 5 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 6 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 7 Nyvik, Stora Hammar Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 8 Nyvik, Stora Hammar Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 9 Nyvik, Stora Hammar Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex straminea 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex straminea 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex straminea 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex strigosa 1 Vejle, Jylland 950805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex strigosa 2 Vejle, Jylland 950805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex strigosa 3 Midtskov near Stendrup Strand, Kolding, Jylland DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex strigosa 5 Midtskov near Stendrup Strand, Kolding, Jylland DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex strigosa 6 Midtskov near Stendrup Strand, Kolding, Jylland DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subspathacea 2 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subspathacea 3 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subspathacea Tverrdalen-Reindalen, Svalbard 790720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 1 Liginich, Latvia 100712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 2 Liginich, Latvia 100712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 3 Liginich, Latvia 100712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 4 Liginich, Latvia 100712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sylvatica 2 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sylvatica 3 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tenuiflora 1 Rautas, Torne Lappmark 830728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tomentosa 2 Nedrema, Estonia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex trinervis 6 southern Fanö, Jylland DK 080808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ursina Adventdalen, Svalbard 790726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ursina, Puccinellia phryganodes Adventdalen, Svalbard 790726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 12 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 7 Copenhagen Botanical Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vesicaria 3 Hovdala, Brönnestad Sk 110531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vesicaria 4 Hovdala, Brönnestad Sk 110531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var pulchella 1 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var pulchella 2 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var pulchella 3 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var pulchella 4 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var pulchella 5 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var pulchella 6 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var viridula 1 Rammsjöstrand, Västra Karup Sk 130624 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var viridula 2 Rammsjöstrand, Västra Karup Sk 130624 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpina 5 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 3 Olaa Forest, Big Island, Hawaii 130724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 4 Hosmer's Grove, Haleakala, East Maui, Hawaii 130720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 5 Olaa Forest, Big Island, Hawaii 130724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 6 Olaa Forest, Big Island, Hawaii 130724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 7 Powerline Road, Big Island, Hawaii 130726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 8 Powerline Road, Big Island, Hawaii 130726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 9 Powerline Road, Big Island, Hawaii 130726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex yulongshanensis 1 Dali, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex yulongshanensis 2 Dali, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex yulongshanensis 3 Dali, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 6 Höllviken, Räng Sk 160521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 7 Höllviken, Räng Sk 160521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 8 Höllviken, Räng Sk 160521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex (Kobresia pygmaea) 2 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 10 Housatonic State Forest, Connecticut 900606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 11a Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 11b Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 11c Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 11d Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 13a Otari Botanical Garden, Wellington NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 13b Otari Botanical Garden, Wellington NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 13c Otari Botanical Garden, Wellington NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 14a Davit Gareji monastery, Georgia 170422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 14b Davit Gareji monastery, Georgia 170422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 14c Davit Gareji monastery, Georgia 170422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 4a Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 4b Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 8 Turda, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 9a Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex 9b Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acuta 1 Klintaine piesupite, Latvia 060708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acuta 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acuta 3 Klintaine piesupite, Latvia 060708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex acutiformis 1 Egtved Å near Nybjerg Mölle, Jylland DK 130630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aff pilulifera 1 Petrota, Thracia, Greece 060608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aff pilulifera 2 Petrota, Thracia, Greece 060608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alba 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alba 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alba 3 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alba 4 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alba 5 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alligata 2 National Tropical Botanical Gardens, Kalehua, Kauaii, Hawaii 130711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alligata 3 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alligata 4 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex alligata 5 Pihea Trail, Alakui Swamps, Kauai, Hawaii 130713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appressa 1 Otari Botanical Garden, Wellington NZ 151113 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appressa 2 Otari Botanical Garden, Wellington NZ 151113 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appressa 3 Otari Botanical Garden, Wellington NZ 151113 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appropinquata 1 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appropinquata 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appropinquata 3 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appropinquata 4 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex appropinquata 5 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aquatilis ssp aquatilis 1 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aquatilis ssp aquatilis 2 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aquatilis ssp aquatilis 3 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex aquatilis ssp aquatilis 4 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 1 Slåttatjåkka, Torne Lappmark 830730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 10 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 11 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 2 Paddos, Torne Lappmark 910716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 4 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 5 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 6 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 7 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arctogena 8 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arenaria 2 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex arenaria 3 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atherodes 3 Brattmyrarna W of Hammerdal, Jämtland 090703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata 2 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata 5 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrata x norvegica Grimsdalshytta, Norway 820803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrofusca 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex atrofusca 2 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bebbii 1 N of Nykvarn, Södermanland 940823 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bebbii 2 N of Nykvarn, Södermanland 940823 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bicolor 9 Børselven, Porsanger, Finnmark, Norway 220723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 1 Kakella-Grimsa, Norway 820801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 2 Riksgränsen, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 3 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 4 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 5 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 6 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bigelowii 7 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 1 Kjörsvik, Norway 820805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 3 Kjörsvik, Norway 820805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 4 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 5 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 6 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 7 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex binervis 9 Garinish Island, West Cork, Ireland 170524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 1 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 2 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 3 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 4 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bohemica 7 Kenkävero Fi 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex bromoides 2 Storrs, Connecticut 900526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 2 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 3 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 4 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 5 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 6 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex brunnescens 7 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp buxbaumii 1 Tollevshaugen, Norway 820803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp buxbaumii 2 Nedrema, Estonia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp buxbaumii 3 Nedrema, Estonia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 1 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 10 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 3 Riksgränsen, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 4 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 5 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 6 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 7 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 8 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex buxbaumii ssp mutica 9 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex canescens 2 Tåssjö Sk 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex canescens 4 Tåssjö Sk 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex canescens x dioica Habo, Västergötland 870705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 1 Mularp, Åsle, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 10 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 11 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 2 Mularp, Åsle, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 3 Mularp, Åsle, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 4 Mularp, Åsle, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 5 Mularp, Åsle, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 6 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 7 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 8 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris 9 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capillaris N of Väddö skjutfält, Uppland 860621 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 1 Dalholen, Norway 820801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 5 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 6 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 7 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 8 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex capitata 9 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex caryophyllea 1 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex caryophyllea 2 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cespitosa 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cespitosa 3 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cespitosa 4 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf albursina 1 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf albursina 2 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 3 Sandflugtsdalen E Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 4 Sandflugtsdalen E Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 5 Sandflugtsdalen E Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 6 Sandflugtsdalen E Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 7 Store Saltsö, Kangerlussuaq, Greenland 140708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf aquatilis ssp stans 8 Store Saltsö, Kangerlussuaq, Greenland 140708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf cephalophora Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf clavata 1 Buffelsfontein, Cape Peninsula, Western Cape, South Africa 100915 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf clavata 2 Buffelsfontein, Cape Peninsula, Western Cape, South Africa 100915 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf clavata 3 Buffelsfontein, Cape Peninsula, Western Cape, South Africa 100915 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf divulsa ssp divulsa La Cumbrillo, Tenerife 090517 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf festucacea 1 Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf festucacea 2 Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf gracillima 2 Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf gracillima 3 Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf laxiculmis Storrs, Connecticut 900526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf laxiflora Storrs, Connecticut 900610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf muricata 1 (cult) Traryd, Småland 190914 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf muricata 2 (cult) Traryd, Småland 190914 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf muricata 3 (cult) Traryd, Småland 190914 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf muricata 4 (cult) Traryd, Småland 190914 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf scoparia 1 Storrs, Connecticut 900525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf scoparia 2 Storrs, Connecticut 900525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 1 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 2 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 3 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 4 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 5 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 6 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf supina 7 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf umbellata 1 Storrs, Connecticut 900428 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex cf umbellata 2 Storrs, Connecticut 900428 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex chordorrhiza 3 Hagamarken Solberg, Jämtland 090703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex chordorrhiza 4 Hagamarken Solberg, Jämtland 090703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex chordorrhiza 5 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex chordorrhiza 6 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex chordorrhiza 7 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 1 W of Pederskirke, Bornholm DK 820523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 2 Lopperstad, Runsten, Öland 080615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 3 W of Pederskirke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 4 W of Pederskirke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex colchica 5 W of Pederskirke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex comans (cult) Stångby, Skåne 050717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex comosa 1 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex comosa 2 Storrs, Connecticut 900614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex concolor 1 Saivoselkä, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex concolor 2 Saivoselkä, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex concolor 3 Saivoselkä, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex concolor 4 Saivoselkä, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex concolor 5 Saivoselkä, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 1 Viidumäe, Saaremaa, Estonia 050719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 10 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 4 Viidumäe, Saaremaa, Estonia 050719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 6 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 7 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 8 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex davalliana 9 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex demissa 1 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex demissa 2 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex demissa 3 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex demissa 4 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex demissa near Lake Åsa, Dalsland 870719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex depauperata 1 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex depauperata 2 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex depauperata 3 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex depauperata 4 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex depauperata 5 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex diandra 1 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex diandra 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex digitata 1 Edsberg, Sollentuna, Uppland 050513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex digitata 2 Sundre, Husryggen, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex digitata 3 Sundre, Husryggen, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex digitata 4 Sundre, Husryggen, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex digitata 5 Sundre, Husryggen, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 1 Igelmossen, Öland 010609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 2 Mölle, Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 3 Mölle, Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 4 Mölle, Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 5 Mölle, Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 6 Mölle, Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex dioica 7 Mölle, Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disperma 1 Siksundsön, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 1 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 2 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 3 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 4 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 5 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 6 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distachya 7 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distans 1 S of Köge, Sjaelland DK 100622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distans 2 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distans 3 S of Köge, Sjaelland DK 100622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex distans 4 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex disticha 1 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 1 S of Pefkochori, Greece 050529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 10 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 2 S of Pefkochori, Greece 050529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 3 SSE of Kalloni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 4 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 5 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 6 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 7 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 8 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divisa 9 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp divulsa 1 Aghios Stefanos W of Petra, Lesvos, Greece 100514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp divulsa 2 Aghios Stefanos W of Petra, Lesvos, Greece 100514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp divulsa 3 Aghios Stefanos W of Petra, Lesvos, Greece 100514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex divulsa ssp divulsa 4 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex echinata 1 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp elata 1 Vallby, Kyrkheddinge Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp elata 2 Vallby, Kyrkheddinge Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp elata 3 Vallby, Kyrkheddinge Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp elata 4 Vallby, Kyrkheddinge Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp elata Ryssudden, Fårö, Gotland 040703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elata ssp omskiana 2 Hattemalanjärvi Fi 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elongata 1 W of Yddingesjön, Svedala Sk 200531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elongata 2 W of Yddingesjön, Svedala Sk 200531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elongata 3 W of Yddingesjön, Svedala Sk 200531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex elongata Lilla Sickla, Nacka, Södermanland 040613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 1 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 10 W of Möckelmossen, Resmo, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 2 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 3 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 6 Kvinnsgröta, Gräsgård, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 7 Kvinnsgröta, Gräsgård, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 8 W of Möckelmossen, Resmo, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ericetorum 9 W of Möckelmossen, Resmo, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 1 Skanör, Skåne 810725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 11 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 12 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 7 Hoburgen, Sundre, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 8 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex extensa 9 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flacca ssp flacca 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flacca ssp flacca 3 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flacca ssp serrulata N of Ormos Apella, Karpathos, Greece 040520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 1 Djupviken, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 2 Prästberget E of Hammarforsen, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 3 Svartarpskärret, Åsle, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 4 Svartarpskärret, Åsle, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 5 Svartarpskärret, Åsle, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 6 Svartarpskärret, Åsle, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 7 Svartarpskärret, Åsle, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava 8 Børselven, Porsanger, Finnmark, Norway 220723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava x hostiana 1 WSW of Ekered, Hasslöv, Halland 220612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava x hostiana 2 WSW of Ekered, Hasslöv, Halland 220612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava x hostiana 3 WSW of Ekered, Hasslöv, Halland 220612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava x hostiana 4 WSW of Ekered, Hasslöv, Halland 220612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava x hostiana 5 WSW of Ekered, Hasslöv, Halland 220612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex flava x hostiana 6 WSW of Ekered, Hasslöv, Halland 220612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex fuliginosa ssp misandra 1 Kopparåsen, Torne Lappmar 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex fuliginosa ssp misandra 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex fuliginosa ssp misandra 3 Kopparåsen, Torne Lappmar 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glacialis 4 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glacialis 5 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glacialis 6 Brattfjell near Tromsø, Norway 220718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glareosa 1 Langfjordbotn, Finnmark, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex glareosa 2 Langfjordbotn, Finnmark, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex globularis 1 W of Sangis, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex globularis 2 W of Sangis, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex grayi 1 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex grayi 2 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex grayi 3 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex grayi 4 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 10 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 11 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 12 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 13 Ottenby lund, Ås, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 14 Ottenby lund, Ås, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 15 Ottenby lund, Ås, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 16 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 17 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 18 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 19 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 2 Nedrema, Estonia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 20 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 5 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 6 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 7 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 8 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hartmanii 9 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex heleonastes Rautas, Torne Lappmark 830728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hirta 1 Videholm, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hirta 2 Videholm, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hirta 3 Videholm, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 2 Riksgränsen, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 3 Riksgränsen, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 4 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 5 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 6 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 7 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex holostoma 8 S of Bugøynes, Finnmark, Norway 220724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hostiana 1 Örups Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hostiana 2 Örups Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hostiana 3 Skogatorpskärren, Högstena, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hostiana 4 Skogatorpskärren, Högstena, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hostiana 5 Skogatorpskärren, Högstena, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex hostiana 6 Skogatorpskärren, Högstena, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex illegitima 1 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex illegitima 2 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex intumescens 1 Storrs, Connecticut 900518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex intumescens 2 Storrs, Connecticut 900518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex intumescens 3 Storrs, Connecticut 900518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex kitaibeliana 1 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex kitaibeliana 2 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex krausei 2 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex krausei 3 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex krausei 4 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex krausei 5 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 3 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 4 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 5 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 6 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lachenalii 7 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 1 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 2 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 3 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 4 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 5 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 6 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laevigata 9 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lapponica 1 Rautas, Torne Lappmark 830728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lapponica 2 Torne Lappmark, Bergfors 110730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lasiocarpa 1 Skärhamn, Bohuslän 120701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lasiocarpa 2 Skärhamn, Bohuslän 120701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lasiocarpa 3 Skärhamn, Bohuslän 120701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laxa 1 Rensjön, Torne Lappmark 880706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex laxa 2 Rensjön, Torne Lappmark 880706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex leiorhyncha 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lepidocarpa ssp lepidocarpa 1 Benestad Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lepidocarpa ssp lepidocarpa 2 Benestad Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lepidocarpa ssp lepidocarpa 3 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex leporina 1 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex livida 1 Rensjön, Torne Lappmark 880706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex livida 2 Skare, Norway 820806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex loliacea E of Slåttatjåkka, Torne Lappmark 830730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lurida 1 Storrs, Connecticut 900612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex lurida 2 Storrs, Connecticut 900612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 1 Rödlöga, Uppland 840707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 10 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 11 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 12 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 13 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 2 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 2 Utö, Södermanland 920622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 3 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 5 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 6 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 7 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 8 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex mackenziei 9 Trantorp, Nättraby, Blekinge 160602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex macloviana ssp subfusca 1 Kohala Mountain, Big Island, Hawaii 130728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex macloviana ssp subfusca 2 Kohala Mountain, Big Island, Hawaii 130728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex magellanica ssp irrigua 1 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 15 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 22 Svartnes, Vardø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 23 Svartnes, Vardø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 24 Svartnes, Vardø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 3 Dovre by, Norway 820801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 7 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex maritima 8 Sugar Loaf, Kangerlussuaq, Greenland 140707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex media 1 SW of Vakketjåkka, Torne Lappmark 830727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex media 2 Hagamarken Solberg, Jämtland 090703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex media 3 Hagamarken Solberg, Jämtland 090703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 1 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 2 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 3 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 4 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 5 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 6 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex melanostachya 7 near Finlandia-huset, Helsinki Fi 120728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 2 Abisko, Torne Lappmark 910717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 4 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 5 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 6 Børselven, Porsanger, Finnmark, Norway 220723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 7 Børselven, Porsanger, Finnmark, Norway 220723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex microglochin 8 Børselven, Porsanger, Finnmark, Norway 220723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 10 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 11 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 12 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 13 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 14 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 15 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 2 Anga, Gotland 070604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 3 Ålahaken, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 4 Österplana, Västergötland 140529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 6 Österplana, Västergötland 140529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 7 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 8 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex montana 9 Kungsmarken, Södra Sandby Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex morrowii 1 Klocksjön, Höör Sk 2008 - Photo: (© 2014 Jan Thomas Johansson).

Carex morrowii 2 Klocksjön, Höör Sk 2008 - Photo: (© 2014 Jan Thomas Johansson).

Carex muskingumensis 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex muskingumensis 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex muskingumensis 3 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex muskingumensis 4 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex muskingumensis 5 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex muskingumensis 6 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex muskingumensis 7 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 11 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 12 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 4 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 5 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 6 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 7 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 8 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex myosuroides 9 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 10 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 2 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 8 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nardina 9 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra 1 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra 3 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra 5 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra 6 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra x trinervis 1 Römö, Jylland DK 950806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra x trinervis 2 Römö, Jylland DK 950806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex nigra x trinervis 3 Römö, Jylland DK 950806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 2 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 3 Store Saltsö, Kangerlussuaq, Greenland 140708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 4 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 5 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 6 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 8 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex norvegica 9 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 1 Transval, Åhus Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 10 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 11 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 12 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 13 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 14 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 15 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 16 Åhus Sk 190519 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 17 Åhus Sk 190519 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 18 Åhus Sk 190609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 19 Åhus Sk 190609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 2 Transval, Åhus Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 20 Åhus Sk 190609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 21 Åhus Sk 190609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 3 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 4 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 5 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 6 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 7 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 8 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex obtusata 9 Transval, Åhus Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 1 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 1 Åland FI 150610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 10 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 2 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 2 Nothamn, Väddö, Uppland 980630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 3 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 4 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 5 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 6 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 7 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 8 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex ornithopoda 9 Gnisvärd, Tofta, Gotland 170627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 1 Videholm, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 10 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 11 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 3 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 4 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 5 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 6 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 7 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 8 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae 9 Ljunghusen, Skanör Sk 170706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex otrubae x paniculata Klagshamn, Västra Klagstorp, Skåne 780812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pachystachya 3 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pachystachya 4 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pachystachya 5 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pachystachya 6 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pairae 1 Torp, Södra Åsum Sk 060809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pairae 2 Torp, Södra Åsum Sk 060809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pairae 3 Torp, Södra Åsum Sk 060809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 1 Höysand S of Oslo, Norway 820726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 2 Varhaug S of Stavanger, Norway 050805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 3 Varhaug S of Stavanger, Norway 050805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 4 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 5 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 6 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex paleacea 7 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pallescens 1 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pallescens 2 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pallescens 3 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pallescens 4 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pallescens 5 Våxtorp, Halland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex panicea 1 Örup Sk 080601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex panicea 2 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex panicea 3 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex parallela 2 Abisko Östra, Torne Lappmark 910716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex parallela 3 Abisko, Torne Lappmark 910717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex parallela 4 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex parallela 5 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 1 Djupviken, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 3 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 4 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 5 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 6 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 7 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 8 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pauciflora 9 Jupukka, Pajala, Norrbotten 220717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pediformis ssp rhizodes 1 Sommarhagen, Frösön, Jämtland 090705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pendula 2 Lund Bot Garden 130619 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pendula 3 Lund Bot Garden 130619 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pendula 5 Lund Bot Garden 070625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pensylvanica Storrs, Connecticut 900528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex perraudieriana 3 Los Tilos, La Palma 070419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pilosa 5 near Lazdukalni, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex plantaginea 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex plantaginea 2 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex plantaginea 3 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex praecox 1 W of Stenåsabadet, Stenåsa, Öland 080614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex praecox 2 W of Stenåsabadet, Stenåsa, Öland 080614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex praecox 3 W of Stenåsabadet, Stenåsa, Öland 080614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex praticola 1 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex praticola 2 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudobrizoides 1 E of Renda near Abava, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudobrizoides 3 E of Renda near Abava, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudobrizoides 4 E of Renda near Abava, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudobrizoides 5 E of Renda near Abava, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 2 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 3 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 4 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus 5 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pseudocyperus Utö, Södermanland 920622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pulicaris 1 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex pulicaris 2 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex punctata 2 Fiskebäckskil, Bohuslän 990718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex punctata 3 Fiskebäckskil, Bohuslän 990718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 1 Skare, Norway 820806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 10 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 11 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 12 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 13 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 14 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 15 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 16 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 2 Skare, Norway 820806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 3 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 4 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 5 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 6 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 7 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 8 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rariflora 9 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex remota 2 Stenshuvud 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rhynchophysa 1 W Kallislahti Fi 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rhynchophysa 2 W Kallislahti Fi 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rhynchophysa 4 W Kallislahti Fi 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rhynchophysa 5 W Kallislahti Fi 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rhynchophysa 6 W Kallislahti Fi 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 1 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 2 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 3 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 4 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 5 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia 6 Karum, Högsrum, Öland 150607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex riparia Mörby, Danderyd, Uppland 960724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 1 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 1 Sularp, Hardeberga, Skåne 920705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 2 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 3 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 4 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 5 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 6 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 7 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rostrata 8 Sularp, Hardeberga Sk 140525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 1 Råtjuvare, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 10 Guolasjavri, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 2 Råtjuvare, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 3 Råtjuvare, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 4 Råtjuvare, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 5 Råtjuvare, Torne Lappmark 110731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 6 Guolasjavri, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 7 Guolasjavri, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 8 Guolasjavri, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rotundata 9 Guolasjavri, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rufina 3 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rupestris 1 Unna Titer, Lule Lappmark 870714 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rupestris 2 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex rupestris 3 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 1 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 10 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 11 Storelvosen, Vadsø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 12 Storelvosen, Vadsø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 13 Storelvosen, Vadsø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 14 Storelvosen, Vadsø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 15 Storelvosen, Vadsø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 16 Storelvosen, Vadsø, Finnmark, Norway 220725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 2 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 3 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 4 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 5 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 6 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 7 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 8 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex salina 9 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 10 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 3 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 4 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 5 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 6 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 7 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 8 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex saxatilis 9 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 1 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 2 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 3 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 4 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 5 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 6 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex scirpoidea 7 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 10 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 5 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 8 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sempervirens 9 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex shortiana 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex siderosticha 1 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex siderosticha 2 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex siderosticha 3 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex siderosticha 4 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 1 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 2 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 3 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 4 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 5 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 6 Kangerlussuaq, Greenland 140705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 7 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 8 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula 9 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex simpliciuscula Dalholen, Norway 820803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 1 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 2 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 3 Lund Sk 120725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex spicata 4 Sularp, Hardeberga Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stricta 1 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stricta 2 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex strigosa 4 Midtskov near Stendrup Strand, Kolding, Jylland DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 1 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 10 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 11 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 12 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 13 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 14 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 2 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 3 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 4 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 5 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 6 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 7 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 8 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex stylosa 9 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subfusca 1 Santa Barbara Botanic Garden, CA 130411 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subfusca 2 Santa Barbara Botanic Garden, CA 130411 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subfusca 3 Santa Barbara Botanic Garden, CA 130411 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subspathacea 1 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex subspathacea 4 near Kautokeino, Troms-Finnmark, Norway 220722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 10 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 11 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 12 Lake Ferguson, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 13 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 14 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 5 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 6 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 7 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 8 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex supina 9 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex swanii Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sylvatica 1 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex sylvatica 4 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tenuiflora 2 Rensjön, Torne Lappmark 880706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tomentosa 1 Tofta, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tomentosa 3 Näsby, Kristianstad Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tomentosa 4 Näsby, Kristianstad Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tomentosa 5 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tomentosa 6 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tribuloides 1 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tribuloides 2 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex tribuloides 3 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex trinervis 1 southern Fanö, Jylland DK 080808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex trinervis 2 southern Fanö, Jylland DK 080808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex trinervis 3 southern Fanö, Jylland DK 080808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex trinervis 4 southern Fanö, Jylland DK 080808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex trinervis 5 southern Fanö, Jylland DK 080808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 1 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 10 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 11 Sandnes, Troms, Norway 220720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 2 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 3 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 4 Kopparåsen, Torne Lappmark 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 5 Tiiriönmäki FI 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 6 Copenhagen Botanical Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 8 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vaginata 9 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vesicaria 1 Hovdala, Brönnestad Sk 110531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vesicaria 2 Hovdala, Brönnestad Sk 110531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vestita Storrs, Connecticut 900610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex viridula var bergrothii northeastern side of Träskmyr, Gotland 830622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpina 1 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpina 2 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpina 3 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpina 4 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpina 6 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpinoidea 1 Storrs, Connecticut 900610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex vulpinoidea 2 Storrs, Connecticut 900610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 1 Limahuli Garden, Kauai, Hawaii 130712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex wahuensis 2 Limahuli Garden, Kauai, Hawaii 130712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Carex x vacillans Kippholmen, Bohuslän 990716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).