Ambrosia trifida

Thesaurus

Noun

1.

Ambrosia trifida - a coarse annual with some leaves deeply and palmately three-cleft or five-cleftgreat ragweedambrosia, bitterweed, ragweed - any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma