Primula 1 Dali, Yunnan 110706 (Magnus Lidén) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 2a Lund Bot Garden 100429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 2b Lund Bot Garden 100429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 2c Lund Bot Garden 100429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 3a Lund Bot Garden 150425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 3b Lund Bot Garden 150425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 3c Lund Bot Garden 150425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aff polyneura 2 Flinck's Garden, Bjuv Sk 090506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aff polyneura 3 Flinck's Garden, Bjuv Sk 090506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aff polyneura 4 Flinck's Garden, Bjuv Sk 070521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aurantiaca 2 Flinck's Garden, Bjuv Sk 140518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aurantiaca 3 Flinck's Garden, Bjuv Sk 140518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula auricula 'Argus' 1 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula auricula 'Argus' 2 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula auricula 'Argus' 3 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula auricula 'Argus' 4 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula auricula 'Argus' 5 Lund Bot Garden 140422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf japonica 1 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf japonica 4 Flinck's Garden, Bjuv Sk 140518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf japonica 5 Flinck's Garden, Bjuv Sk 140518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf rupicola near Lijiang, Yunnan 110707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf villosa 2 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Primula denticulata 6 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula denticulata 7 Lund Bot Garden 150416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula denticulata 8 Lund Bot Garden 150416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 1 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 2 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 8 Skartofta Ängar, Öved, Skåne 950423 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior x vulgaris 1 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior x vulgaris 2 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior x vulgaris 3 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior x vulgaris 4 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior x vulgaris 5 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula farinosa 1 Sularp, Hardeberga Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 5 Sularp, Hardeberga Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 6 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 7 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 8 Simris Strandäng, Simris Sk 080531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 1 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 2 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 3 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 4 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 5 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 6 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula hirsuta 7 between Col du Lautaret and Col du Galibier FR 180502 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 1 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 14 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 2 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 3 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 4 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 5 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 6 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 7 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 8 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula japonica 3 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula japonica 5 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula japonica 6 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula matthioli 4 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 3 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 4 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 6 Lund Bot Garden 070516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula membranifolia Yunnan 1107 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Primula minima 3 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula minima 4 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 2 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 7 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 5 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 6 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 7 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Primula poissonii 2 between Dali and Lijiang, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula poissonii 3 between Dali and Lijiang, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula polyneura 2 Lund Bot Garden 130619 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula pulchella 1 between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula pulchella 2 between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula pulchella 3 between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Primula scandinavica 2 Unna Titer, Lule Lappmark 870714 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula secundiflora 6 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula secundiflora 7 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula secundiflora 8 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula secundiflora 9 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula stricta 10 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Primula uralensis 2 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Primula veris 5 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 6 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 7 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 8 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris x vulgaris 1 Döndalen, Bornholm DK 820521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris x vulgaris 3 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris x vulgaris 4 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vialii 3 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris 1 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris 2 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris 3 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris 4 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Primula vulgaris 7 between Tbilisi and Kazbegi, Georgia 170418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris 8 between Tbilisi and Kazbegi, Georgia 170418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp sibthorpii Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 1 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 2 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 3 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 4 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 5 Döndalen, Bornholm DK 820521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 6 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 7 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vulgaris ssp vulgaris 8 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula 2d Lund Bot Garden 100429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aff polyneura 1 Flinck's Garden, Bjuv Sk 090506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula aurantiaca 1 Flinck's Garden, Bjuv Sk 140518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf japonica 2 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf japonica 3 Flinck's Garden, Bjuv Sk 140518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf membranifolia Dali, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula cf villosa 1 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula deflexa 1 Baimashan, Yunnan 110710 (Magnus Thorell) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula deflexa 2 Baimashan, Yunnan 110710 (Magnus Thorell) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula denticulata 4 Lund Bot Garden 130503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula denticulata 5 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 3 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 4 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 5 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 6 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior 7 Lund Bot Garden 080422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula elatior x vulgaris Möns Klint, Mön, Denmark 910530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula ellisae 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula farinosa 10 Sularp, Hardeberga Sk 200623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 11 Sularp, Hardeberga Sk 200623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 2 Sularp, Hardeberga Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 3 Sularp, Hardeberga Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 4 Sularp, Hardeberga Sk 140516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula farinosa 9 Sularp, Hardeberga Sk 200623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula gemmifera var amoena 1 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula gemmifera var amoena 2 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula gemmifera var amoena 3 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula gemmifera var amoena 4 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula gemmifera var amoena 5 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula halleri 1 (cult) Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula halleri 2 (cult) Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula halleri 3 (cult) Brunnby Sk 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 10 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 11 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 12 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 13 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula integrifolia 9 the Belagua valley, Navarra, Spain 180525 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula japonica 1 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula japonica 2 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula japonica 4 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula matthioli 1 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula matthioli 2 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula matthioli 3 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 1 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 2 Lund Bot Garden 100521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 5 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula meadia 7 Lund Bot Garden 070516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 1 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 3 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 4 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 5 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula nutans ssp finmarchica 6 Melsvik, Alta, Finnmark, Norway 220721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 1 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 2 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 3 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula palinuri 4 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula poetica 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula poissonii 1 between Dali and Lijiang, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula polyneura 1 Lund Bot Garden 130619 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula pulchella 4 between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula scandinavica 1 Unna Titer, Lule Lappmark 870714 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula scandinavica 3 Söndre Knutshö, Dovre, Norway 820802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula secundiflora 1 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula secundiflora 2 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula secundiflora 3 Yunnan, Napa Hai 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula sieboldii 'daphnis' 1 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula sieboldii 'daphnis' 2 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula sikkimensis 1 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Primula sikkimensis 2 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula sikkimensis 3 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 1 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 2 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 3 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 4 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 5 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 6 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 7 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 8 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta 9 Store Saltsö, Kangerlussuaq, Greenland 140629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula stricta Staloluokta, Lule Lappmark 870715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula uralensis 1 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 10 Höllviken, Sk 130805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 3 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 4 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris 9 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris x vulgaris 2 Döndalen, Bornholm DK 820521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula veris x vulgaris 5 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vialii 1 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Primula vialii 2 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).