frostweed
1. perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts • Syn: frost-weed, frostwort, Helianthemum canadense, Crocanthemum canadense • Hypernyms: helianthemum, sunrose, sun rose 2. tall perennial herb having clusters of white flowers; the eastern United States • Syn: Virginia crownbeard, frost-weed, Verbesina virginica • Hypernyms: crownbeard, crown-beard, crown beard
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