fragile fern


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Related to fragile fern: Cystopteris fragilis, Cystopteris bulbifera, brittle bladder fern, bulblet bladder fern
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Noun1.fragile fern - delicate fern widely distributed in North America and European having thin pinnatifid fronds with brittle stemsfragile fern - delicate fern widely distributed in North America and European having thin pinnatifid fronds with brittle stems
bladder fern - any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
References in periodicals archive ?
Given the fertile components of the fragile fern flora present at Rocky Glen, one might speculate that several possible hybrid combinations might be present, but some of these can be excluded relatively easily from further consideration.
This fern is common in the mixed-species population of fragile ferns growing on the limestone walls and crevices of the Rocky Glen drainage.
This fern is scattered in the mixed-species population of fragile ferns growing on the limestone walls and crevices of the Rocky Glen drainage.