Sonchus L. >

Cypselas brown, with narrow wings or not winged. Involucres 5–6 mm diam. Sonchus
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Leaves leathery, stiff. Cypselas ribbed
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Leaves with spinose margins, pinnatifid to pinnatisect, oblanceolate to lanceolate, up to 20 cm long and 7 cm wide. Heads 5–6 mm diam. Annual or biennial herb up to 1 m high. Widespread. Weed of cultivation and waste places. Introd. from Europe. Fl. most of the year. Prickly Sowthistle Sonchus asperglaucescens