bladder fern

bladder fern

n.

Any of various ferns of the widespread genus Cystopteris, having pinnately compound fronds and often growing in rocky areas.

---

[After its bladderlike indusium.]

---

bladder fern

n

(Life Sciences & Allied Applications / Plants) a small fern, Cystoperis fragilis, with graceful lanceolate leaves, typically growing on limestone rocks and walls

[named from the bladder-shaped indusium]

Thesaurus

Noun

1.

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