Cerastium 1c Yunnan, NV Shangri-la 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 1 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 2 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 3 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 4 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 5 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 7 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp alpinum 1 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp alpinum 3 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp glabratum 4 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 1 Bolterdalen, Svalbard 790724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 10 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 11 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 12 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 13 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 14 N of Russel Glacier, E of Kangerlussuaq, Greenland 140702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 15 Tacan, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arcticum 2 Reindalen, Svalbard 790719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Cerastium arcticum 7 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Cerastium arcticum, Polemonium boreale Tverrdalen-Reindalen, Svalbard 790718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arvense 1 Norra Nöbbelöv Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arvense 4 W of Eriksdal, Röddinge Sk 130606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arvense 5 W of Eriksdal, Röddinge Sk 130606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium banaticum 1 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium banaticum 3 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium banaticum 4 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium banaticum 5 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Cerastium brachypetalum 10 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 11 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 17 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 19 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 20 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 21 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 22 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 3 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 4 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 6 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 8 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 9 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

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

Cerastium cf banaticum 1 NW of Dadia, Thracia, Greece 060606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Cerastium cf polymorphum 1 Eagle Gorge Nat. Park, Georgia 170425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium cf polymorphum 2 Eagle Gorge Nat. Park, Georgia 170425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium cf polymorphum 3 Eagle Gorge Nat. Park, Georgia 170425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium cf polymorphum 4 Eagle Gorge Nat. Park, Georgia 170425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium chlorifolium 1 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium chlorifolium 3 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium chlorifolium 5 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium comatum 1 Samos City, Samos, Greece 920504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium comatum 2 Spili, Crete 110329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium comatum 3 Spili, Crete 110329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium comatum 4 Spili, Crete 110329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Cerastium decalvans 3 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium decalvans 6 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium decalvans 7 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium decalvans 9 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 1 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 2 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 6 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium dubium 2 Nagyiváni puszta, Hortobágy, Hungary 240511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium fontanum ssp vulgare 3 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium fontanum ssp vulgare 4 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium fontanum ssp vulgare 5 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium fontanum ssp vulgare 6 Lund Bot Garden 130605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 10 Södra Sandby Sk 140502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 11 Södra Sandby Sk 140502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 2 Lund Sk 080528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 3 Höllviken Sk 070407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 4 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 5 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 6 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 7 Södra Sandby Sk 140502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 8 Södra Sandby Sk 140502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 9 Södra Sandby Sk 140502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 1 Tornrör, Sandby, Öland 030601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 10 S of Lyngsjö Sk 190613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 11 S of Lyngsjö Sk 190613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 12 S of Lyngsjö Sk 190613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 13 S of Lyngsjö Sk 190613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 3 Dörby, Runsten, Öland 030601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 8 Karlskrona, Blekinge 160601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 9 Karlskrona, Blekinge 160601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Cerastium perfoliatum 10 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 11 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 13 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 14 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 15 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 5 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 7 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 8 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 9 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 1 Vickleby, Öland 950605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 10 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 12 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 14 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 16 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 17 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 18 Kvinnsgröta, Gräsgård, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 19 Kvinnsgröta, Gräsgård, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 5 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 6 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 7 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 8 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 9 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium rectum 1 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium rectum 2 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium regelii 1 Tverrdalen-Reindalen, Svalbard 790718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium regelii 2 Bolterdalen, Svalbard 790725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium scaposum 2 Imbros, Crete 110328 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium scaposum 3 Imbros, Crete 110328 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 2 Kämpinge, Räng, Sk 130518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 3 Kämpinge, Räng, Sk 130518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 4 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 5 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 7 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 8 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 9 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium subtetrandrum 2 Lilla Hammar, Stora Hammar, Sk 130518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium subtetrandrum 3 Klagshamn Sk 170508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium subtetrandrum 4 Klagshamn Sk 170508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium subtetrandrum 5 Klagshamn Sk 170508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sventenii 2 (cult) Visitor's Centre, Tenerife 090516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Cerastium sylvaticum 14 Kaposvár in the Zselic area, Hungary 24050 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 5 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 6 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Cerastium 1a Yunnan, NV Shangri-la 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium 1b Yunnan, NV Shangri-la 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum 6 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp alpinum 2 Ansätten, Jämtland 090704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp alpinum 4 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp glabratum 1 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp glabratum 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium alpinum ssp glabratum 3 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arvense 2 Norra Nöbbelöv Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium arvense 3 W of Eriksdal, Röddinge Sk 130606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium banaticum 2 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Cerastium brachypetalum 1 Örup, Skåne 870602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 12 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 13 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 14 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 15 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 16 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 18 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 2 Örup, Skåne 870602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 5 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium brachypetalum 7 S of Rustningshamn, Glumslöv Sk 140427 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Cerastium candidissimum 6 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium candidissimum 7 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Cerastium cf banaticum 2 NW of Dadia, Thracia, Greece 060606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium chlorifolium 2 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium chlorifolium 4 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium chlorifolium 6 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium decalvans 4 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium decalvans 5 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium decalvans 8 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 3 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 4 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 5 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium diffusum 7 Omey Island near Claddaghduff, Ireland 170526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium dubium 1 Nagyiváni puszta, Hortobágy, Hungary 240511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium dubium 3 Nagyiváni puszta, Hortobágy, Hungary 240511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium fontanum ssp vulgare 1 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium fontanum ssp vulgare 2 Skanörs Ljung Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glomeratum 1 Lund Sk 080528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 2 Dörby, Runsten, Öland 030601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 4 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 5 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 6 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 7 Karlskrona, Blekinge 160601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 7 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 8 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium glutinosum 9 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

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

Cerastium perfoliatum 1 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 12 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 2 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 3 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 4 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium perfoliatum 6 Tatev, Armenia 180509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 11 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 13 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 15 Eketorp, Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 2 Nedergårdsö, Södermanland 990612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 3 Nedergårdsö, Södermanland 990612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium pumilum 4 Nedergårdsö, Södermanland 990612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium rectum 3 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium scaposum 1 Imbros, Crete 110328 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 1 Kämpinge, Räng, Sk 130518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium semidecandrum 6 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium subtetrandrum 1 Lilla Hammar, Stora Hammar, Sk 130518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sventenii 1 (cult) Visitor's Centre, Tenerife 090516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sventenii 3 (cult) Visitor's Centre, Tenerife 090516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 1 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 11 Kaposvár in the Zselic area, Hungary 240507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 12 Kaposvár in the Zselic area, Hungary 24050 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 13 Kaposvár in the Zselic area, Hungary 24050 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 2 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 3 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Cerastium sylvaticum 4 Bukta forest NE of Zelsva S of Marijampole, Lithuania 150807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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