WordNet
silvery spleenwort
n. fern with elongate silvery outgrowths enclosing the developing spores [syn: Deparia acrostichoides, Athyrium thelypteroides]
North American fern with narrow fronds on yellowish leafstalks [syn: glade fern, narrow-leaved spleenwort, Athyrium pycnocarpon, Diplazium pycnocarpon]