Common nameBrittle Bladder fern Cystopteris fragilis © Natural History Museum Latin names ClassPteridopsida OrderPolypodiales FamilyAthyriaceae GenusCystopteris Speciesfragilis Alternative Family nameCystopteridaceae Geographic details Habitatmoist shady crevices Soil typetolerant DistributionThroughout British Isles, rare SE NativeYes General Plant heightmedium BranchedNo Plant colourmid-green Habitlvs open cluster Conservation statusnot threatened Wikimedia Urlhttps://species.wikimedia.org/wiki/Cystopteris_fragilis Leaf details Separate fertile leavesNo Leaf shapeelliptic-lanceolate Pinnae2-pinnate WintergreenNo Spore details Spore descriptionspinulose HomosporeYes Rhizome details Rhizome descriptionshort branching Rhizome scalestriangular-lanceolate Rhizome positioncreeping Sori details Sori shapeovoid Sori placeon lateral veins closer to midrib Indusium details Indusium presentYes Indusium shapeovoid Indusium descriptionacute or lacerate at apex