Petasites albus 3 Fågelsång 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites albus 4 Fågelsång 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Petasites frigidus 4 Battfjellet, Svalbard 790721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites hybridus 1 Lund Sk 080325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites hybridus 3 Lund Sk 080325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Petasites japonicus 2 Lund Bot Garden 090320 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites japonicus 3 Lund Bot Garden 090320 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites japonicus 4 Lund Bot Garden 130906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites japonicus 5 Lyckås, Högestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites paradoxus 1 (cult) Brunnby Sk 090322 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites paradoxus 2 (cult) Brunnby Sk 090322 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites pyrenaicus 10 Möllebaekken, Bornholm 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites pyrenaicus 4 Brunnby (cult) 120120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Petasites pyrenaicus 8 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites pyrenaicus 9 Möllebaekken, Bornholm 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 11 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 12 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 13 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 15 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 3 Mandjala, Saaremaa, Estonia 050720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 4 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites albus 1 Fågelsång 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites albus 2 Fågelsång 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites albus 5 Röddinge, Skåne 940513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites albus 6 Röddinge Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites frigidus 1 W of Björkliden, Torne Lappmark 880705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Petasites hybridus 2 Lund Sk 080325 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites hybridus 4 Trigrad gorge, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites hybridus 5 Trigrad gorge, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites hybridus 6 Trigrad gorge, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites hybridus 7 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites japonicus 6 Lyckås, Högestad Sk 140415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites kablikianus 1 Hotel-Restaurant Orfei, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites kablikianus 2 Hotel-Restaurant Orfei, Teshel, Bulgaria 120508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites paradoxus 3 Col d'Izoard FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites paradoxus 4 Col d'Izoard FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Petasites pyrenaicus 2 Brunnby (cult) 120120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites pyrenaicus 3 Brunnby (cult) 120120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites pyrenaicus 6 Brunnby (cult) 120120 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites pyrenaicus 7 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 1 (female) Nyagrop, Maglehem, Skåne 960516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 10 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 14 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 16 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 2 (male) Bo at Lake Ringsjön, Skåne 950423 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 5 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 6 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 7 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 8 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Petasites spurius 9 W of Osbyholm, Hörby Sk 140501 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).