"delicate fern widely distributed in North America and European having thin pinnatifid fronds with brittle stems"@en-us . "brittle bladder fern"^^ . "Cystopteris fragilis"@en-us . . . . "0"^^ . . . . "brittle fern"@en-us . "13196003-n"^^ . . "0"^^ . "fragile fern"@en-us . . . "112442063"@en-us . . "113196003"^^ . "brittle bladder fern"@en-us . .