Triplophyllum - Tectariaceae

Triplophyllum dimidiatum (Mett. ex Kuhn) Holttum






Aspidium dimidiatum Mett. ex Kuhn
Ctenitis dimidiata (Mett.) Tardieu
Ctenitis tindalii Tardieu
Dryopteris dimidiata (Mett.) Kuntze
Nephrodium dimidiatum (Mett.) Baker

Common name


Rhizome creeping; rhizome scales deltoid in outline, base scalloped, apex only slightly tapering, cells with light brown walls and colorless contents. Fronds monomorphic, closely spaced, subcoriaceous. Stipe 15-19 cm long, brown, covert with very short brown hairs. Lamina tripinnate, lower pinnae well developed, terminal pinnae with gradually decreasing pinnules towards the narrow linear end, c. 20 x 18-20 cm; ultimate segments trapezoid, about 2 cm long, margin entire or sometimes partially lobed, with a slightly sharp end, decurrent on the petiolule, with upper margin often auriculate, with detached auricle, lower margin partly bordered by the oblique costa; rhachis and costae shortly tomentose, other surfaces naked. Sori rounded; indusium brown.




Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Equatorial Guinea (incl. Bioko), Gabon.

Growth form



  • 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 196.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3.Flore du Cameroun, Page 268. (Includes a picture).
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8.Flore du Gabon, Pages 158 - 159.