Jacobaea abrotanifolia 1 (cult) Brunnby Sk 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia ssp carpatica 1 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia ssp carpatica 2 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia ssp carpatica 3 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia ssp carpatica 4 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia ssp carpatica 5 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia ssp carpatica 6 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Jacobaea alpina x subalpina 10 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 11 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 12 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 13 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 7 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 8 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 3 Halen, northern Fanö DK 080809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 4 Skjern Å, Sönderfelding, Jylland DK 130629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 5 NW of Varming, Jylland DK 140803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 6 NW of Varming, Jylland DK 140803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 7 NW of Varming, Jylland DK 140803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 8 NW of Varming, Jylland DK 140803 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica var erratica 2 Rödby havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica var erratica 3 Rödby havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica var erratica 4 Rödby havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica var erratica 5 Rödby havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica var erratica 6 Rödby havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea erucifolia 4 Nyvik, Stora Hammar, Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea erucifolia 5 Nyvik, Stora Hammar, Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Jacobaea maritima 1 (cult) Magaluf, Mallorca 110418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea maritima 2 (cult) Magaluf, Mallorca 110418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea maritima 3 (cult) Magaluf, Mallorca 110418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea nemorensis ssp jacquinianus 5 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea nemorensis ssp jacquinianus 6 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea nemorensis ssp jacquinianus 7 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea ovata 3 Bad Gastein, Austria 080704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea ovata 4 Bad Gastein, Austria 080704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea ovata 5 Bad Gastein, Austria 080704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 2 Daugava between Slutiski and Verveli, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 3 Daugava between Slutiski and Verveli, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 4 Daugava between Slutiski and Verveli, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 7 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 8 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 10 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 12 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 3 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 4 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 5 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 6 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 7 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 8 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 9 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 1 Sjaustru, Östergarn, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 3 Torsburgen, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 4 Tofta skjutfält, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 7 Norrsund, Fårö, Gotland 140829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 10 NW of Stångkvie, Stånga, Gotland 140830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 2 between Etelhem and Hejde, Gotland 070804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 8 NW of Stångkvie, Stånga, Gotland 140830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 9 NW of Stångkvie, Stånga, Gotland 140830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp vulgaris 2 Lund Sk 070720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp vulgaris 3 Lund Sk 070720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp vulgaris 4 Höllviken Sk 120721 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea abrotanifolia 2 (cult) Brunnby Sk 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 1 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 2 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 3 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 4 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 5 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 6 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea alpina x subalpina 9 Tromsøya, Troms, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea analoga Yunnan 2011 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 1 Halen, northern Fanö DK 080809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica 2 (cult) Brunnby Sk 120828 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea aquatica var erratica 1 Rödby havn, Lolland DK 130811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea cannabifolia 1 Sollentuna, Uppland 970810 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea cannabifolia 2 Sollentuna, Uppland 970810 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea erucifolia 1 E of Bromölla 110814 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea erucifolia 2 Nyvik, Stora Hammar, Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea erucifolia 3 Nyvik, Stora Hammar, Sk 130808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Jacobaea incana ssp incana 5 La Meije near Col du Lautaret FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea nemorensis ssp jacquinianus 2 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea nemorensis ssp jacquinianus 3 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea nemorensis ssp jacquinianus 4 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Jacobaea ovata 2 Bad Gastein, Austria 080704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 1 Daugava between Slutiski and Verveli, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 10 Zygmantiskes SSW of Vilnius, Lithuania 150808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 6 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea paludosa 9 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 1 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 11 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea sarracenica 2 Stockamöllan Sk 160818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 2 Danbo, Östergarn, Gotland 070804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 5 Norrsund, Fårö, Gotland 140829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp dunensis 6 Norrsund, Fårö, Gotland 140829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 1 between Etelhem and Hejde, Gotland 070804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 3 NW of Etelhem, Gotland 980730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 5 NW of Stångkvie, Stånga, Gotland 140830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 6 NW of Stångkvie, Stånga, Gotland 140830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp gotlandica 7 NW of Stångkvie, Stånga, Gotland 140830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Jacobaea vulgaris ssp vulgaris 1 Höllviken Sk 120812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).