Draba 2a Mount Aragats, Armenia 180513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 1 Lund Bot Garden 080404 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 2 Lund Bot Garden 080404 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 3 Lund Bot Garden 080404 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 4 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 5 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 6 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 7 Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 8 Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aizoides 9 Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba alpina W of Longyearbyen, Svalbard 790704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 4 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 8 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 9 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 10 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 4 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 5 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba aurea 8 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 9 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba bruniifolia 1 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba bruniifolia 2 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cacuminum Söndre Knutshö, Dovre, Norway 820802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba cf cretica Omalós, Crete 800514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cf yunnanensis NW of Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cretica 1 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cretica 2 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cretica 3 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cretica 4 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cretica 5 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba dubia 1 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba dubia 2 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba dubia 3 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 1 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Draba glabella 17 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 24 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 27 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 3 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 4 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba heterocoma ssp archipelagii Ambelos Padroso, Samos, Greece 920508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 4 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 5 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 11 Stenåsabadet, Stenåsa, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 12 Stenåsabadet, Stenåsa, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 5 (cult) Brunnby Sk (orig Dovre, Norway) 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba kitadakensis 3 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lactea 2 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lactea Battfjellet, Svalbard 790719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lasiocarpa 1 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lasiocarpa 4 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lasiocarpa 5 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lasiocarpa 6 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba longisiliqua 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba micropetala 1 W of Longyearbyen, Svalbard 790704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba nemorosa 1 Alnön, Medelpad 870606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba nemorosa 3 Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba nemorosa 5 near Kazbegi, Georgia 170419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba norvegica 4 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba oxycarpa 1 Kopparåsen 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba oxycarpa 11 Kopparåsen 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba oxycarpa 15 Kopparåsen 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba oxycarpa 4 Kopparåsen 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba oxycarpa 5 Kopparåsen 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba oxycarpa 7 Kopparåsen 110727 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 1 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 2 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 3 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 5 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 6 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Draba sibirica 1 Copenhagen Botanical Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba sibirica 4 Copenhagen Botanical Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba sibirica 5 Copenhagen Botanical Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba ventosa 1 GBT 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba ventosa 3 GBT 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba ventosa 4 GBT 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 1 Lund, Sk 130501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 15 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 16 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 17 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 18 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 4 Lund, Sk 120430 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 5 Lund, Sk 120430 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 6 Lund, Sk 120430 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 8 Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 9 Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba yunnanensis 4 NW Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba alpina Longyearbyen, Svalbard 790728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba alpina Söndre Knutshö, Dovre, Norway 820802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba athoa 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 5 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 6 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba athoa 7 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 1 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 2 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba aurea 3 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cana 1 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cana 2 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cana 5 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Draba cf cinerea 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cf cinerea 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cf cinerea 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cf cinerea 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea 1 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea 2 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea 3 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea 4 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea 5 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba cinerea 8 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea 9 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba cinerea Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba fladnizensis Söndre Knutshö, Dovre, Norway 820802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 11 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 12 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 13 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 14 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 15 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 16 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 18 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 19 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 2 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 20 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 21 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 22 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 23 Kangerlussuaq, Greenland 140628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 25 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba glabella 26 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Draba glabella var dovrensis Grimsdalshytta, Dovre, Norway 820803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 7 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 8 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba hispanica var atlantica 9 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 1 (cult) Brunnby Sk (orig Dovre, Norway) 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 10 Stenåsabadet, Stenåsa, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 2 (cult) Brunnby Sk (orig Dovre, Norway) 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 3 (cult) Brunnby Sk (orig Dovre, Norway) 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 4 (cult) Brunnby Sk (orig Dovre, Norway) 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 6 (cult) Brunnby Sk (orig Dovre, Norway) 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 7 Stenåsabadet, Stenåsa, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 8 Stenåsabadet, Stenåsa, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba incana 9 Stenåsabadet, Stenåsa, Öland 220604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba involucrata 1 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Draba jucunda Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba kitadakensis 1 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba kitadakensis 2 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lactea 1 Fløyfjell near Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Draba lasiocarpa 2 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba lasiocarpa 3 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba micropetala 2 W of Longyearbyen, Svalbard 790704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba nemorosa 2 Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba nemorosa 4 near Kazbegi, Georgia 170419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba nivalis Jeknaffo, Lule Lappmark 870715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Draba norvegica 3 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba norvegica 5 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba norvegica 6 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba norvegica 7 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 4 Lund Bot Garden 140331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 7 Lund Bot Garden 140524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba paysonii 8 Lund Bot Garden 140524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba schivereckia 2 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba schivereckia 3 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba schivereckia 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba schivereckia 5 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba schivereckia 6 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba schivereckia 7 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 10 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 11 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 12 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 13 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 14 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 2 Lund, Sk 130501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 3 Lund, Sk 110425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba verna 7 Lund, Sk 130501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba yunnanensis 1 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba yunnanensis 2 NW Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Draba yunnanensis 3 NW Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).