|Connecticut Botanical Society|
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Plant ID Guides
Fragile Fern (Brittle Fern)
Fragile fern is very similar to slender fragile fern; until recently, they were considered to be varieties of the same species. In Connecticut, fragile fern probably occurs only in the most northern parts of the state. Where they both occur, they can be quite difficult to distinguish. See the Flora of North America Cystopteris fragilis page for a discussion of the differences.