| Sonchus acaulis D. Cours. |
Accepted |
9 |
| Sonchus aquatilis Pourr. |
Accepted |
9 |
| Sonchus araraticus Nazarova & Barsegyan |
Accepted |
9 |
| Sonchus arvensis L. |
Accepted |
18 |
| Sonchus arvensis subsp. uliginosus (M. Bieb.) Nyman |
Accepted |
18 |
| Sonchus asper (L.) Hill |
Accepted |
9 |
| Sonchus asper subsp. glaucescens (Jord.) Ball ex Ball |
Accepted |
9 |
| Sonchus bornmuelleri Pit. |
Accepted |
9 |
| Sonchus bourgeaui S. Bip. |
Accepted |
8 |
| Sonchus brachyotus DC. |
Accepted |
9 |
| Sonchus briquetianus Gand. |
Accepted |
9 |
| Sonchus bulbosus (L.) N. Kilian & Greuter |
Accepted |
9 |
| Sonchus bulbosus subsp. microcephalus (Rech.) N. Kilian & Greuter |
Accepted |
9 |
| Sonchus bulbosus subsp. willkommii (Burnat & Barbey) N. Kilian & Greuter |
Accepted |
9 |
| Sonchus bupleuroides (F. Quer) N. Kilian & Greuter |
Accepted |
9 |
| Sonchus canariensis (S. Bip.) Boulos |
Accepted |
9 |
| Sonchus capillaris Svent. |
Accepted |
9 |
| Sonchus congestus Willd. |
Accepted |
9 |
| Sonchus crassifolius Willd. |
Accepted |
9 |
| Sonchus daltonii Webb |
Accepted |
9 |
| Sonchus dregeanus DC. |
Accepted |
9 |
| Sonchus erzincanicus V. A. Matthews |
Accepted |
9 |
| Sonchus fauces-orci Knoche |
Accepted |
None |
| Sonchus fragilis Ball |
Accepted |
9 |
| Sonchus fruticosus L. |
Accepted |
9 |
| Sonchus gandogeri Pit. |
Accepted |
9 |
| Sonchus gigas Boulos ex Humbert |
Accepted |
18 |
| Sonchus grandifolius Kirk |
Accepted |
18 |
| Sonchus gummifer Link |
Accepted |
9 |
| Sonchus heterophyllus (Boulos) U. Reifenb. & A. Reifenb. |
Accepted |
9 |
| Sonchus kirkii Hamlin |
Accepted |
18 |
| Sonchus leptocephalus Cass. |
Accepted |
9 |
| Sonchus macrocarpus Boulos & C. Jeffrey |
Accepted |
16 |
| Sonchus malayanus Miq. |
Accepted |
27 |
| Sonchus maritimus L. |
Accepted |
9 |
| Sonchus masguindalii Pau & F. Quer |
Accepted |
9 |
| Sonchus microcarpus (Boulos) U. Reifenb. & A. Reifenb. |
Accepted |
9 |
| Sonchus microcephalus Mejías |
Accepted |
15 |
| Sonchus novocastellanus Cirujano |
Accepted |
9 |
| Sonchus oleraceus (L.) L. |
Accepted |
16 |
| Sonchus palustris L. |
Accepted |
9 |
| Sonchus pendulus Sennikov |
Accepted |
9 |
| Sonchus pinnatus Aiton |
Accepted |
9 |
| Sonchus platylepis Webb |
Accepted |
9 |
| Sonchus pustulatus Willk. |
Accepted |
9 |
| Sonchus radicatus Aiton |
Accepted |
9 |
| Sonchus schweinfurthii Oliv. & Hiern |
Accepted |
9 |
| Sonchus sosnowskyi Schchian |
Accepted |
9 |
| Sonchus tenerrimus L. |
Accepted |
7 |
| Sonchus transcaspicus Nevski |
Accepted |
9 |
| Sonchus tuberifer Svent. |
Accepted |
9 |
| Sonchus ustulatus Lowe |
Accepted |
9 |
| Sonchus wightianus DC. |
Accepted |
9 |
| Sonchus wilmsii R. E. Fr. |
Accepted |
9 |
| Sonchus asper Wulf. ex DC. |
Unresolved |
9 |
| Sonchus maritimus Turcz. |
Unresolved |
9 |
| Sonchus chondrilloides Desf. |
Synonym of Launaea fragilis (Asso) Pau |
8 |
| Sonchus elliotianus Hiern |
Synonym of Launaea nana (Baker) Chiov. |
9 |
| Sonchus rarifolius Oliv. & Hiern |
Synonym of Launaea rarifolia (Oliv. & Hiern) Boulos |
9 |
| Sonchus spinosus (Forssk.) DC. |
Synonym of Launaea spinosa (Forssk.) Kuntze |
9 |
| Sonchus arvensis subsp. arvensis |
Synonym of Sonchus arvensis L. |
18 |
| Sonchus arvensis var. arvensis |
Synonym of Sonchus arvensis L. |
18 |
| Sonchus arvensis f. glabrescens (Günther & Grab. & Wimm.) Kirp. |
Synonym of Sonchus arvensis subsp. uliginosus (M. Bieb.) Nyman |
18 |
| Sonchus arvensis f. glabrescens (Günther & Grab. & Wimm.) Kirp. |
Synonym of Sonchus arvensis subsp. uliginosus (M. Bieb.) Nyman |
18 |
| Sonchus uliginosus M. Bieb. |
Synonym of Sonchus arvensis subsp. uliginosus (M. Bieb.) Nyman |
18 |
| Sonchus asper |
Synonym of Sonchus asper (L.) Hill |
9 |
| Sonchus asper (L.) Vill. |
Synonym of Sonchus asper (L.) Hill |
9 |
| Sonchus asper subsp. asper |
Synonym of Sonchus asper (L.) Hill |
9 |
| Sonchus asper var. asper |
Synonym of Sonchus asper (L.) Hill |
9 |
| Sonchus asper subsp. nymanii (Tineo & Guss.) Hegi |
Synonym of Sonchus asper subsp. glaucescens (Jord.) Ball ex Ball |
9 |
| Sonchus glaucescens Jord. |
Synonym of Sonchus asper subsp. glaucescens (Jord.) Ball ex Ball |
9 |
| Sonchus glaucescens subsp. glaucescens |
Synonym of Sonchus asper subsp. glaucescens (Jord.) Ball ex Ball |
9 |
| Sonchus bipontini Asch. ex O. ＆. Hiern |
Synonym of Sonchus bipontini Asch. ex Oliv. & Hiern |
9 |
| Sonchus bipontini Aschers. |
Synonym of Sonchus bipontini Asch. ex Oliv. & Hiern |
9 |
| Sonchus arvensis var. laevipes Koch |
Synonym of Sonchus brachyotus DC. |
9 |
| Sonchus brachyotus None |
Synonym of Sonchus brachyotus DC. |
9 |
| Crepis bulbosa (L.) Tausch |
Synonym of Sonchus bulbosus (L.) N. Kilian & Greuter |
9 |
| Sonchus bulbosus subsp. bulbosus |
Synonym of Sonchus bulbosus (L.) N. Kilian & Greuter |
9 |
| Aetheorhiza bulbosa subsp. microcephala Rech. |
Synonym of Sonchus bulbosus subsp. microcephalus (Rech.) N. Kilian & Greuter |
9 |
| Aetheorhiza bulbosa subsp. willkommii (Burnat & Barbey) Rech. |
Synonym of Sonchus bulbosus subsp. willkommii (Burnat & Barbey) N. Kilian & Greuter |
9 |
| Sonchus bulbosus subsp. willkommii (B. ＆. Barbey) N. K. ＆. Greuter |
Synonym of Sonchus bulbosus subsp. willkommii (Burnat & Barbey) N. Kilian & Greuter |
9 |
| Sonchus canariensis subsp. canariensis |
Synonym of Sonchus canariensis (S. Bip.) Boulos |
9 |
| Sonchus abbreviatus Link |
Synonym of Sonchus congestus Willd. |
9 |
| Sonchus jacquinii DC. |
Synonym of Sonchus congestus Willd. |
9 |
| Sonchus macranthus Poir. |
Synonym of Sonchus congestus Willd. |
9 |
| Sonchus laevigatus Willd. |
Synonym of Sonchus fruticosus L. |
9 |
| Taeckholmia heterophylla Boulos |
Synonym of Sonchus heterophyllus (Boulos) U. Reifenb. & A. Reifenb. |
9 |
| Sonchus hierrensis var. benehoavensis Svent. |
Synonym of Sonchus hierrensis (Pit.) Boulos |
9 |
| Taeckholmia pinnata (L.) Boulos |
Synonym of Sonchus leptocephalus Cass. |
9 |
| Sonchus littoralis (Skottsb.) |
Synonym of Sonchus littoralis (Kirk) Allan |
18 |
| Sonchus javanicus Jungh. |
Synonym of Sonchus malayanus Miq. |
27 |
| Sonchus maritimus subsp. aquatilis Nyman |
Synonym of Sonchus maritimus L. |
9 |
| Sonchus maritimus subsp. maritimus |
Synonym of Sonchus maritimus L. |
9 |
| Taeckholmia microcarpa Boulos |
Synonym of Sonchus microcarpus (Boulos) U. Reifenb. & A. Reifenb. |
9 |
| Kirkianella novae-zelandiae (Hook.) Allan |
Synonym of Sonchus novae-zelandiae (Hook.) Hook. |
54 |
| Kirkianella novae-zelandiae f. glauca (Hook.) Allan |
Synonym of Sonchus novae-zelandiae (Hook.) Hook. |
54 |
| Sonchus novae-zelandiae Hook. |
Synonym of Sonchus novae-zelandiae (Hook.) Hook. |
54 |
| Sonchus novocastellanus C. (. S. C. × . S. maritimus) |
Synonym of Sonchus novocastellanus Cirujano |
9 |
| Sonchus angustissimus Hook. |
Synonym of Sonchus oleraceus (L.) L. |
16 |
| Sonchus asper Hall ex G. Gaertn. & B. Mey. & Scherb. |
Synonym of Sonchus oleraceus (L.) L. |
16 |
| Sonchus asper P. Gaertn. & al. |
Synonym of Sonchus oleraceus (L.) L. |
16 |
| Sonchus oleraceus subsp. oleraceus |
Synonym of Sonchus oleraceus (L.) L. |
16 |
| Sonchus oleraceus var. oleraceus |
Synonym of Sonchus oleraceus (L.) L. |
16 |
| Sonchus oleraceus var. triangularis Wallr. |
Synonym of Sonchus oleraceus (L.) L. |
16 |
| Sonchus pinnatus var. palmensis S. Bip. |
Synonym of Sonchus palmensis Boulos |
9 |
| Sonchus palustris subsp. palustris |
Synonym of Sonchus palustris L. |
9 |
| Sonchus pinnatus subsp. pinnatus |
Synonym of Sonchus pinnatus Aiton |
9 |
| Sonchus dianae Lacaita ex Willk. |
Synonym of Sonchus tenerrimus L. |
7 |
| Sonchus tenerrimus subsp. dianae Malag. |
Synonym of Sonchus tenerrimus L. |
7 |
| Sonchus ustulatus subsp. ustulatus |
Synonym of Sonchus ustulatus Lowe |
9 |
| Sonchus wightianus subsp. wightianus |
Synonym of Sonchus wightianus DC. |
9 |
| Sonchus lachnocephalus Rech. |
Synonym of Sonchus wightianus subsp. wallichianus (DC.) Boulos |
10 |