Ambrosia artemisiifolia

Thesaurus

Noun

1.

Ambrosia artemisiifolia - annual weed with finely divided foliage and spikes of green flowers; common in North America; introduced elsewhere accidentallycommon 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