Polypodium calirhiza is a species of fern in the polypody family. Its common names include nested polypody and habit polypody. It is found in California and Oregon. The leaflets on each leaf are broad and oval-shaped coming to a dull point. This fern is sometimes epiphytic.The name of this species is a conflation of Polypodium californicum and Polypodium glycyrrhiza because this species arose as a hybrid between those two species.
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