bladder fern

bladder fern

n (Plants) a small fern, Cystoperis fragilis, with graceful lanceolate leaves, typically growing on limestone rocks and walls [C19: named from the bladder-shaped indusium]

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Noun

1.

bladder fern - any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sorifern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by sporesCystopteris, genus Cystopteris - chiefly small perennial rock ferns: bladder ferns; in some classifications placed in Polypodiaceaebrittle bladder fern, brittle fern, Cystopteris fragilis, fragile fern - delicate fern widely distributed in North America and European having thin pinnatifid fronds with brittle stemsCystopteris montana, mountain bladder fern - fern of rocky mountainous areas of hemisphereberry fern, bulblet bladder fern, bulblet fern, Cystopteris bulbifera - North American fern often bearing bulbils on the leaflets