silvery spleenwort
1. North American fern with narrow fronds on yellowish leafstalks • Syn: glade fern, narrow-leaved spleenwort, Athyrium pycnocarpon, Diplazium pycnocarpon • Hypernyms: fern • Member Holonyms: Athyrium, genus Athyrium 2. fern with elongate silvery outgrowths enclosing the developing spores • Syn: Deparia acrostichoides, Athyrium thelypteroides • Hypernyms: fern • Member Holonyms: Deparia, genus Deparia
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