noun
small genus sometimes included in genus Onoclea; in some classifications both genera are placed in Polypodiaceae
• Syn: ↑Matteuccia, ↑genus Matteuccia, ↑genus Pteretis
• Hypernyms: ↑fern genus
• Member Holonyms: ↑Dryopteridaceae, ↑family Dryopteridaceae, ↑Athyriaceae, ↑family Athyriaceae
• Member Meronyms: ↑ostrich fern, ↑shuttlecock fern, ↑fiddlehead, ↑Matteuccia struthiopteris, ↑Pteretis struthiopteris, ↑Onoclea struthiopteris
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\\təˈrēd.ə̇s\ nounUsage: capitalized
: a genus of ferns (family Polypodiaceae) that are sometimes included in Onoclea but distinguished by the vaselike clumps of fronds with feathery pinnate fertile fronds surrounded by or clustered among much taller sterile lanceolate fronds — see ostrich fern
Useful english dictionary. 2012.