Pictorial guide to the flora of the British Isles

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Cystopteris fragilis (L.) Bernh.

brittle bladder-fern (Cystopteridaceae)

 SpreadBias within British IslesDirection of bias
WidespreadModerate tendencyN
Plant Atlas 2020
BSBI Distribution Map

Cystopteris fragilis is a fern of lime-rich upland areas that has delicate, 2–3-pinnate leaves.

Bergamo (BG), Italy; 2018-07-04

 brittle bladder-fern / Cystopteris fragilis: _Cystopteris fragilis_ is a fern of lime-rich upland areas that has delicate, 2–3-pinnate leaves.

The sori of Cystopteris fragilis are borne on veins on the underside of the fronds.

Beddgelert (VC49: Caernarvonshire); 2020-08-12

 brittle bladder-fern / Cystopteris fragilis: The sori of _Cystopteris fragilis_ are borne on veins on the underside of the fronds.

All images copyright © Christopher J. Dixon unless otherwise indicated.

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne