Sonchus abbreviatus El Bailadero, Tenerife 060416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 4 Mirador de Tasartico, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 6 Barranco El Rincon, Gran Canaria 080409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 9 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 3 Lund Sk 110824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 4 Bergianska 060913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 5 Lund Sk 110824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 6 Lund Sk 110824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 8 Dalby Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis ssp uliginosus 2 Saulkrasti, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis var maritimus 4 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis var maritimus 5 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus asper 2 Höllviken Sk 070811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus asper 3 Höllviken Sk 110820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus asper 4 Höllviken Sk 110820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus brachylobus 1 Anden Verde, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus brachylobus 2 Anden Verde, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus brachylobus 4 Anden Verde, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus capillaris 2 Barranco del Infierno, Tenerife 060415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus capillaris 3 Barranco del Infierno, Tenerife 060415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus congestus 2 Punta de Teno, Tenerife 940307 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus congestus 3 Miradór de San Pedro, Tenerife 160404 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus congestus 4 Miradór de San Pedro, Tenerife 160404 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 1 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 7 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus gonzalezpadronii 2 Jardin Botanico, Gran Canaria 080417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus gummifer 1 Barranco del Infierno, Tenerife 970322 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus gummifer 2 Barranco del Infierno, Tenerife 970322 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus kirkii 1 Otari Botanical Garden, Wellington NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus kirkii 2 Otari Botanical Garden, Wellington NZ 151114 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 5 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 6 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 7 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 8 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 9 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus oleraceus 2 Lund Sk 110901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus oleraceus 3 Tofta, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus oleraceus 4 Lund Sk 110901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus oleraceus 5 Lund Sk 110901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palmensis 4 Mirca N Santa Cruz de La Palma, La Palma 070417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palmensis 5 Mirca N Santa Cruz de La Palma, La Palma 070417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 6 Landskrona Sk 170806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus platylepis 1 Tamadaba, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus platylepis 3 Tamadaba, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus platylepis 4 Tamadaba, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus radicatus 1 Teno, Tenerife 090513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus radicatus 2 Teno, Tenerife 090513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tectifolius Anaga, Tenerife 940308 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 2 Magaluf, Mallorca 110422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 3 Magaluf, Mallorca 110422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 5 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 6 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 1 Tamadaba, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 2 Barranco El Rincon, Gran Canaria 080409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 3 Mirador de Tasartico, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 5 Mirador de Tasartico, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 7 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus acaulis 8 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 1 Dalby Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 2 Dalby Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis 7 Lund Sk 110824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis ssp uliginosus 1 Saulkrasti, Latvia 100716 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis var maritimus 1 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis var maritimus 2 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus arvensis var maritimus 3 Seskarö, Norrbotten 220730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus asper 1 Höllviken Sk 070811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus brachylobus 3 Anden Verde, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus bulbosus ssp willkommii 1 Jardin Botanico, Soller, Mallorca 110419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus bulbosus ssp willkommii 2 Jardin Botanico, Soller, Mallorca 110419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus bulbosus ssp willkommii 3 Jardin Botanico, Soller, Mallorca 110419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus canariensis 1 Chio, Tenerife 940309 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus canariensis 2 N of Chirche, Tenerife 970318 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus canariensis 3 Chio, Tenerife 160406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus capillaris 1 Barranco del Infierno, Tenerife 060415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus cf tenerrimus 1 SE of Mijas, Andalusia, Spain 120327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus cf tenerrimus 2 SE of Mijas, Andalusia, Spain 120327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus congestus 1 Playa de San Marcos, Tenerife 940310 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 2 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 3 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 4 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 5 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus fauces-orci 6 Barr. de Masca, Tenerife 160408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus gonzalezpadronii 1 Jardin Botanico, Gran Canaria 080417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus hierrensis 1 Barranco del Angustias, La Palma 070418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus hierrensis 2 Barranco del Angustias, La Palma 070418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 1 Cercados de Espinos, Gran Canaria 080411 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 2 Cercados de Espinos, Gran Canaria 080411 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 3 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus leptocephalus 4 Miradór de Don Martín, Güímar, Tenerife 160405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus oleraceus 1 Tofta, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palmensis 1 Mirca N Santa Cruz de La Palma, La Palma 070417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palmensis 2 Mirca N Santa Cruz de La Palma, La Palma 070417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palmensis 3 W of Montana de Abraham, La Palma 070416 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 1 Ljunghusen, Stora Hammar Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 2 Karlskrona, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 3 Karlskrona, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 4 Karlskrona, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 5 Landskrona Sk 170806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 7 Landskrona Sk 170806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus palustris 8 Landskrona Sk 170806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus platylepis 2 Tamadaba, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 1 Magaluf, Mallorca 110422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 4 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 7 Malmö Sk 200919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sonchus tenerrimus 8 Malmö Sk 200919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).