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Moderate to large, high-climbing ferns with scandent rhizomes, often in swamps or beside rivers.


Africa present, Asia present
A genus of 6 species, two from Africa, the others from Asia.


1. Formerly credited with a pantropical distribution and many more species, due to confusion with the genera Teratophyllum and Lomariopsis, here placed in Lomariopsidaceae. Holttum (1932) was the first to elucidate this confusion.
2. Somewhat divergent from the other genera of Blechnaceae, mainly in anatomical characters; but venation, stomata, spores, and gametophyte agree best with this family. If the base number would he shown to be really x = 37, this would constitute another confirmation.


J.Sm. 1954 – In: Revis. Fl. Malaya. p 410
Holttum 1932 – In: Gard. Bull. Straits Settlem. p 245
Croft 1985 – In: L.C.Leach & Osborne, Freshwater Plants of Papua New Guinea. p 38
J.Sm. 1971 – In: Amer. Fern J. p 119