fragile 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