ambrosia trifida

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Related to ambrosia trifida: Ambrosia psilostachya, great ragweed
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giant ragweed

giant ragweed

Similar properties of common ragweed. Leaves are like pointy mittens (3-5 lobes).
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Capitulos masculinos con involucro cupuliforme y un poco asimetricos, casi glabros, pelos multicelulares cortos y rigidos con base bulbosa, aquenio terminado en un pico conico Ambrosia trifida 5.
Chemical composition and antibacterial activity of the essential oil from Ambrosia trifida L.
Ambrosia trifida is often extremely abundant in disturbed areas nearly throughout the state (Diggs et al.