Contains 2 accepted taxa overall.

Characteristics
Sonchus L.
SOWTHISTLE
Classification
ASTERALES
Sonchus
Citation
SONCHUS Linnaeus, Sp. Pl. 793. 1753.
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TYPE: Sonchus oleraceus Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 3: 316. 1913.
Distribution Map Present

This species have been reported in the counties highlighted.

Species
Scientific Name Common Name Herbarium Specimens Status Photos
Sonchus asper SPINY SOWTHISTLE Not Native FACU (NWPL)
Sonchus oleraceus COMMON SOWTHISTLE Not Native FACU (NWPL)
Identification Key
1.  Leaf margin densely, copiously prickly throughout, the basal auricles often recurved or curled, rounded; peduncle and phyllaries usually glabrous, infrequently stipitate-glandular; corolla ligule mostly shorter than the tube; cypselae longitudinally ribbed, otherwise smooth
1.  Leaf margin weakly prickly, the basal auricles usually mostly straight; peduncle and phyllaries usually stipitate-glandular; corolla ligule subequal to the tube; cypselae longitiduinally ribbed, faces transversely rugulose or tuberculate
Genus Synonyms
Synonym Full Citation Basionym Type
Trachodes Trachodes D. Don, Trans. Linn. Soc. London 16: 182. 1830. TYPE: Trachodes paniculatus D. Don