Ambrosia trifida


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Related to Ambrosia trifida: Ambrosia psilostachya, great ragweed
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Noun1.Ambrosia trifida - a coarse annual with some leaves deeply and palmately three-cleft or five-cleftAmbrosia trifida - a coarse annual with some leaves deeply and palmately three-cleft or five-cleft
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 ?
Nonnative species are indicated by an * Aboveground and Aboveground only Seed bank only seed bank Acer saccharinum Aristida oligantha Abutilon theophrasti * Achillea Capsella Acalypha rhomboidea millefolium * bursa-pastoris * Agalinis auriculata Cardamine hirsuta * Agrostis gigantea * Agalinis tenuifolia Carex tribuloides Amaranthus tuberculatus Agrimonia Cyperus esculentus Ambrosia parviflora artemisifolia Agrimonia pubescens Cyperus strigosus Ambrosia trifida Allium cemuum Descurainia sophia * Barbarea vulgaris * Andropogon gerardii Dicanthelium Bras sica sp.
capricornu (Woodson) Woodson [Trailing Milkweed] Asteraceae Ambrosia trifida L.
Two forbs, giant ragweed (Ambrosia trifida variety texana) and pigeonberry (Rivina humilis), also were relatively common and generally more abundant than other forbs such as frostweed (Verbesina virginica) and hedge-parsley (Torilis arvensis).