pteretis : Idioms & Phrases
genus pteretis
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noun small genus sometimes included in genus Onoclea; in some classifications both genera are placed in Polypodiaceae
Pteretis; genus Matteuccia; Matteuccia.
WordNet
pteretis struthiopteris
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noun tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes
Onoclea struthiopteris; shuttlecock fern; ostrich fern; Matteuccia struthiopteris; fiddlehead.