''Crepidomanes intricatum'',

synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

''Trichomanes intricatum'', is known as the weft fern. The genus ''

Crepidomanes ''Crepidomanes'' is a genus of ferns in the family Hymenophyllaceae. It is mostly distributed through the old world The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of t ...

'' is accepted in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), but not by some other sources. , ''

Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...

'' sank the genus into a broadly defined '' Trichomanes'', treating this species as ''Trichomanes intricatum''. This is an unusual filmy fern that grows in rock shelters and crevices in the eastern United States, being known only from its gametophyte generation. It is a rare plant that is protected in several US states. Recent study has found a relationship between this species and an Asian filmy-fern species, '' Crepidomanes schmidianum''. Both share the same

chloroplast A chloroplast () is a type of membrane-bound organelle known as a plastid that conducts photosynthesis mostly in plant and algal cells. The photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in ...

genome. The relationship is uncertain. In 2011, Atsushi Ebihara and Alan S. Weakley transferred ''Trichomanes intricatum'' to ''Crepidomanes intricatum'' based on the chloroplast molecular sequence data. Trichomanes_intricatum1-BobKlips.jpg Image:Trichomanes_intricatum3-BobKlips.jpg, Closeup

References

Hymenophyllales Ferns of the United States Flora of the Northeastern United States Flora of the Southeastern United States Flora without expected TNC conservation status {{Polypodiidae-stub