Sonchus asper (Linnaeus) Hill. Spinyleaf Sow-thistle, Prickly Sow-thistle. Phen: Late Mar-Jul. Hab: Roadsides, fields, pastures, disturbed areas. Dist: Native of Europe.
Origin/Endemic status: Europe
Syn: = Ar, Bah, C, F, Fl7, FNA19, G, GrPl, Il, K1, K3, K4, Mi, NcTx, NE, Oh3, Pa, RAB, S, SE1, Tn, Va, W, WH3, WV
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© Gary P. Fleming
© Bruce A. Sorrie
© Joey Shaw source
© Aidan Campos source
© Erik Danielson source
© Aidan Campos source