Hymenophyllum flexuosum

The striking filmy fern Hymenophyllum flexuosum. The scientific name means wavy or undulating (flexuose) membranous (hymen) leaf (phyllum). The fronds of most filmy ferns are only one-celled thick! Hymenophyllum flexuosum usually grows on rocks, but can be a low epiphyte on trees. Photo © Leon Perrie.

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