Crepidomanes - Hymenophyllaceae

Crepidomanes africanum (H.Christ) Ebihara & Dubuisson






Trichomanes africanum H. Christ

Common name


Rhizome long creeping, with a row of black hairs. Fronds spaced, membranous. Stipe 0.5-1 cm long, broadly winged above. Lamina tripinnatifid, deltoid in outline; pinnae about 10 pairs, contiguous, forming a right angle with the broadly winged rachis, sessile, ovate-obtuse, margin incised-flabellate, 1-1.5 x 0.9 cm; ultimate segments linear, apex rounded, almost all segments of the top of the fertile frond being soriferous, color more or less greyish green in the dry. Sori with campanulate, marginalized indusia, with dilated opening; long-exserted receptacle.




On trees and rocks in forest, altitude c.1675m

Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Central African Republic, Chad, Congo, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Ghana, Guinea, Ivory Coast, Liberia, Nigeria, Sierra Leone, Sudan and South Sudan, Togo.

Growth form

Epiphytic, lithophytic.


  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 38.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3.Flore du Cameroun, Pages 88 - 89.
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8.Flore du Gabon, Pages 63 - 64. As Trichomanes africanum Christ