gymnocarpium : Idioms & Phrases
genus gymnocarpium
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noun oak ferns: in some classification systems included in genus Thelypteris
Gymnocarpium.
WordNet
gymnocarpium dryopteris
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noun bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere
oak fern; Thelypteris dryopteris.
WordNet
gymnocarpium robertianum
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noun yellow-green fern of rocky areas of northern hemisphere
limestone fern; northern oak fern.