genus Ambrosia


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Noun1.genus Ambrosia - comprising the ragweeds; in some classification considered the type genus of a separate family Ambrosiaceae
asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs
aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia
ambrosia, 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
References in periodicals archive ?
One significant cause of seasonal allergies is plants from the genus Ambrosia, which includes several types of ragweed.
A re-evaluation of the genus Ambrosia (Compositae).