Rhizome widely creeping, covered with dark hairs, roots absent, root-like shoots present. Fronds simple, sometimes lobed to pinnatifid, venetion catadromous. Sori often immersed in the laminae, tubular to campanulate, involucre bilibiate or truncate to dilate, receptacles exserted Derivation of name: Didymus: double, glossum: tong; some species have a bilabiate soral aperture Comment: This genus was included in the widely circumscribed genus Trichomanes. Worldwide: C. 30 species, pantropical distribution Mozambique: 1 taxon. |
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