Saxifraga 1a near Grazalema, Andalusia SP 120325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 1b near Grazalema, Andalusia SP 120325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 1c near Grazalema, Andalusia SP 120325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 1e near Grazalema, Andalusia SP 120325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 1f near Grazalema, Andalusia SP 120325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga 5b Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 7 S of Mazo, La Palma 090422 (Richard Åkesson) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 8a Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 9b Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 9c Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 9c Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga aspera 1 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga aspera 2 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga aspera 3 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga aspera 4 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga bryoides 2 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga bryoides 5 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga bryoides 6 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga bryoides 7 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

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

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

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

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

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

Saxifraga cespitosa ssp laxiuscula 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cespitosa ssp laxiuscula 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cespitosa ssp laxiuscula 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cespitosa ssp laxiuscula 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cespitosa ssp laxiuscula 5 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cespitosa ssp laxiuscula 6 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cf graeca 2 N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chionophila 2 Baimashan, Yunnan, 4400m 110710 (A-C Rudolphi) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chrysospleniifolia 2 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chrysospleniifolia 3 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chrysospleniifolia 4 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chrysospleniifolia 5 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cotyledon 2 Grimsdalshytta, Norway 820803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 10 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga cuneifolia 9 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cymbalaria var huetiana 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cymbalaria var huetiana 5 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cymbalaria var huetiana 6 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga exarata ssp moschata 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 5 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 6 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 8 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 9 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga ferdinandi-coburgi 3 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga gemmulosa 1 Cumbre de los Reales, Sierra Bermeja, Andalucía Spain 220416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga gemmulosa 2 Cumbre de los Reales, Sierra Bermeja, Andalucía Spain 220416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga gemmulosa 4 Cumbre de los Reales, Sierra Bermeja, Andalucía Spain 220416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga gemmulosa 5 Cumbre de los Reales, Sierra Bermeja, Andalucía Spain 220416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga globulifera 1 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga globulifera 2 Sierra Blanca de Marbella, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga granulata 5 Hammars backar, Valleberga Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga granulata 6 Hammars backar, Valleberga Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga granulata 7 Hammars backar, Valleberga Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga granulata 8 Höllviken Sk 110603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga granulata 9 Höllviken Sk 110603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 3 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 4 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 5 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 6 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 7 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 8 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hederacea 1 between Alanya and Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hederacea 2 between Alanya and Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 10 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 11 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 12 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 13 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 17 Adventdalen, Svalbard 790725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 3 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 4 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 5 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 7 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 8 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hostii 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hostii 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hyperborea 1 Ny-Ålesund, Svalbard 790713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hyperborea 2 Ny-Ålesund, Svalbard 790713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hypnoides 10 Burren Nat Park, Clare, Ireland 170528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga hypnoides 9 Burren Nat Park, Clare, Ireland 170528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga marginata 7 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga marginata 8 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga melanocentra 4 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga microgyna 4 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga microgyna 5 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga microgyna 6 Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

Saxifraga oppositifolia 6 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga oppositifolia 7 Store Saltsö, Kangerlussuaq, Greenland 140701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 18 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 19 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 20 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 21 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 23 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 3 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 4 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 5 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 12 Mount Hassel, Kangerlussuaq, Greenland 140711 - Photo: (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 4 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 5 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 6 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 7 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 8 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 12 Lund Bot Garden 120615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 14 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 15 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 2 Turda, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 4 Turda, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 5 Zdiar, Slovakia 950629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 9 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cervicornis 2 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cervicornis 3 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cymosa 1 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cymosa 2 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cymosa 3 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cymosa 4 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga platysepala 1 Bolterdalen, Svalbard 790725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga platysepala 3 Bolterdalen, Svalbard 790725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga rosacea 10 Black head, Clare, Ireland 170529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rosacea 11 Black head, Clare, Ireland 170529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga rosacea 15 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Saxifraga rosacea 8 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rosacea 9 Black head, Clare, Ireland 170529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 11 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 12 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga rotundifolia 6 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 3 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 10 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 11 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 12 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 17 Gorges du Furon FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 18 Gorges du Furon FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 3 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 4 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rufescens 4 near Lijiang, Yunnan 110707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

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

Saxifraga scardica 8 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 6 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 7 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 8 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga sibthorpii 4 (cult) Brunnby Sk 150618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sibthorpii 5 (cult) Brunnby Sk 150618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sibthorpii 6 (cult) Brunnby Sk 150618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sibthorpii 7 (cult) Brunnby Sk 150618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sibthorpii 8 (cult) Brunnby Sk 150618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sibthorpii 9 (cult) Brunnby Sk 150618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga spathularis 12 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

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

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

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

Saxifraga tridactylites 10 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 3 Löderups Strandbad, Löderup Sk 140416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 4 NE of Åhus Sk 140419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 5 NE of Åhus Sk 140419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 9 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga trifurcata 6 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga umbrosa 11 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 12 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 1 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 2 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 3 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 4 Lund Bot Garden 160615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 5 Lund Bot Garden 160615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 6 Lund Bot Garden 160615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga vayredana 7 Lund Bot Garden 160615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 0d Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 1d near Grazalema, Andalusia SP 120325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga 5a Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 6a (France) Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 6b (France) Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 8b Lund Bot Garden 150503 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga 9a Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga aizoides 1 Bad Gastein, Austria 080630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga aizoides 2 Bad Gastein, Austria 080630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga bryoides 3 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga bryoides 4 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga bryoides 8 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga cespitosa ssp cespitosa 10 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cespitosa ssp cespitosa 11 Abisko, Torne Lappmark 110725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga cf graeca 1 N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chionophila 1 Baimashan, Yunnan, 4400m 110710 (A-C Rudolphi) - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga chrysospleniifolia 1 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cotyledon 1 Skaftafell, Iceland 770719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cotyledon 3 Drivstua, Norway 820804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 1 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 11 Lund Bot Garden 150514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 12 Lund Bot Garden 150514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 2 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga cuneifolia 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 6 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 7 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cuneifolia 8 Lund Bot Garden 140407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cymbalaria var huetiana 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cymbalaria var huetiana 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga cymbalaria var huetiana 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga exarata ssp moschata 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga exarata ssp moschata 7 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga ferdinandi-coburgi 1 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga ferdinandi-coburgi 2 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga gemmulosa 3 Cumbre de los Reales, Sierra Bermeja, Andalucía Spain 220416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Saxifraga granulata 10 Hammars backar, Valleberga Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga granulata 11 Kämpinge, Räng Sk 130518 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga granulata 2 Hammars backar, Valleberga Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga haenseleri 1 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga haenseleri 2 Sierras de Tejeda, Almijara y Alhama Natural Park, Andalucía Spain 220417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hederacea 3 between Alanya and Konya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hederacea 4 between Alanya and Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hederacea 5 between Alanya and Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 1 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 14 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 15 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 16 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 2 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 38 SSW of Aukstadvaris, Lithuania 150805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 39 SSW of Aukstadvaris, Lithuania 150805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 40 SSW of Aukstadvaris, Lithuania 150805 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 40 western side of Halkaer Soe, Jylland DK 230802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 41 western side of Halkaer Soe, Jylland DK 230802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 42 western side of Halkaer Soe, Jylland DK 230802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 6 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hirculus 9 Sjöängen, Slöta, Västergötland 140723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

Saxifraga hostii 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hostii 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga hypnoides 4 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hypnoides 5 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga hypnoides 7 Burren Nat Park, Clare, Ireland 170528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga hypnoides 8 Burren Nat Park, Clare, Ireland 170528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga longifolia San Juan de la Peña, Belchite area, NE Spain 180523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Saxifraga marginata 5 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga marginata 6 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga osloensis 1 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 10 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 11 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 12 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 13 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 14 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 15 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 16 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 17 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 2 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 22 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 6 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 7 (cult) Brunnby Sk (orig Bräcke, Dalsland) 110521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 8 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga osloensis 9 Gärdet, Stockholm 150529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga paniculata ssp neogaea 1 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 10 Mount Hassel, Kangerlussuaq, Greenland 140711 - Photo: (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 11 Mount Hassel, Kangerlussuaq, Greenland 140711 - Photo: (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 2 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 3 Mt Hassel, Kangerlussuaq, Greenland 140630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp neogaea 9 Mount Hassel, Kangerlussuaq, Greenland 140711 - Photo: (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 1 Turda, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 10 Lund Bot Garden 120615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 11 Lund Bot Garden 120615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 13 Lund Bot Garden 120615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 16 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 17 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 18 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 3 Turda, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 6 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 7 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga paniculata ssp paniculata 8 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga pedemontana ssp cervicornis 1 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga rosacea 13 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rosacea 14 Aran Islands, Clare, Ireland 170527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga rosacea 6 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 1 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 10 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 2 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 7 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 8 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia 9 Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 1 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 2 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 4 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 5 Lund Bot Garden 160520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 6 Lund Bot Garden 160520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp chrysospleniifolia 7 Lund Bot Garden 160520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 1 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 13 between Lans en Vercors and Villard-de-Lans FR 150702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 14 between Lans en Vercors and Villard-de-Lans FR 150702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 15 between Lans en Vercors and Villard-de-Lans FR 150702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 16 Gorges du Furon FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 2 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 5 Lund Bot Garden 100527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 6 Lund Bot Garden 100527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 7 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 8 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga rotundifolia ssp rotundifolia 9 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga rufescens 3 near Lijiang, Yunnan 110707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga scardica 1 Lund Bot Garden 170504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga scardica 6 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga scardica 7 Lund Bot. Garden Sk 170407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 1 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 2 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 3 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 4 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga sempervivum 5 Trigrad gorge-Jagodinska, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga spathularis 10 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga spathularis 11 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga spathularis 13 Glengariff Woods, West Cork, Ireland 170523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Saxifraga spathularis 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

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

Saxifraga tridactylites 1 Löderups Strandbad, Löderup Sk 140416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 2 Löderups Strandbad, Löderup Sk 140416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 4 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 5 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 6 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 7 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga tridactylites 8 Stenby, Benestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Saxifraga trifurcata 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 1 Bad Gastein, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 10 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 13 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 2 Bad Gastein, Austria 080628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 3 Bad Gastein, Austria 080628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 4 Bad Gastein, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 5 Bad Gastein, Austria 080628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 6 Bad Gastein, Austria 080628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Saxifraga umbrosa 8 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Saxifraga umbrosa 9 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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