silver fern
1. fern of southern tropical Africa having fronds with white undersides • Syn: Pityrogramma argentea • Hypernyms: fern • Member Holonyms: Pityrogramma, genus Pityrogramma 2. tropical American fern having fronds with white undersides • Syn: Pityrogramma calomelanos • Hypernyms: fern • Member Holonyms: Pityrogramma, genus Pityrogramma
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