Polyphlebium Copel.
Polyphlebium Cop. in Philipp. J. Sci. 67, 1938, 55, as genus.
Lamina 1-3-pinnatifid, very thin, pellucid; veins several times branched in final segs. Indusium urceolate, mouth entire, dilated. Receptacle very slender, far exserted. Type and only known sp.: T. venosum R. Br.