Tra từ Helianthemum canadense - Từ điển Oxford Learners Wordfinder Dictionary

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Helianthemum canadense

noun

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:
frostweed, frost-weed, frostwort, Crocanthemum canadense
• Hypernyms:
helianthemum, sunrose, sun rose