Conyza canadensis

Từ điển WordNet v3.1 - WordNet Dictionary

noun

common North American weed with linear leaves and small discoid heads of yellowish flowers;
widely naturalized throughout temperate regions;
sometimes placed in genus Erigeron
• Syn:
horseweed, Canadian fleabane, fleabane, Erigeron canadensis
• Hypernyms:
weed
• Member Holonyms:
Conyza, genus Conyza