Family: Asteraceae
giant ragweed, more..., great ragweed, horse-cane
[Ambrosia integrifolia Muhl. ex Willd., more, Ambrosia striata Rydb., Ambrosia trifida var. integrifolia L., Ambrosia trifida var. trifida L., Ambrosia variabilis Rydb.]
Etymology: Ambrosia: Greek for "food of the gods" Plants: erect, annual, 2'-9' tall forb Leaves: opposite, stalked, 3-5 palmately-divided lobes, upper leaves slightly winged Flowers: inflorescence of many, small, green, bead-like heads on 10" spikes; blooms Aug.-Sept. Fruits: seeds not on fluffy pappus Habitat: moist; disturbed sites Conservation Status: Native - potentially invasive
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