Higher classification Eupolypods II | Division Pteridophyta Rank Family | |
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Lower classifications Gymnocarpium, Gymnocarpium dryopteris | ||
Cystopteridaceae are a family of ferns in the eupolypods II clade of the order Polypodiales, class Polypodiopsida. They include four genera: Acystopteris, Cystoathyrium, Cystopteris, and Gymnocarpium. Gymnocarpium and Cystopteris have been found to be sister to the remaining Eupolypods II.
Cystopteridaceae are small or medium-sized ferns in forests and crevices. They generally have thin laminae, and small, round, naked sori.
Phylogenic relationships
The following diagram for the eupolypods II, based on Lehtonen, 2011, and Rothfels & al., 2012, shows a likely phylogenic relationship between the Cystopteridaceae and the other families of the eupolypods II clade.
References
Cystopteridaceae Wikipedia(Text) CC BY-SA