Pneumatopteris - Thelypteridaceae

Pneumatopteris blastophora (Alston) Holttum






Cyclosorus blastophorus Alston.
Thelypteris blastophora (Alston) Reed
Abacopteris letouzeyi Tardieu

Common name


Rhizome shortly creeping, ± 5 cm in diameter. Fronds monomorphic, laxly tufted or shortly spaced, 1.1–2.5 m tall, gemmiferous. Stipe 30–80 cm long, straw-coloured. Lamina pinnate, ± oblong in outline, the lower pinnae not reduced, the upper segment resembling the pinnae and with a gemma at its base, 0.6–1.1 x 13–40 cm; pinnae linear-oblong in outline, apex narrowly tapering to a point, base truncate or rounded, margin scalloped, 15–23 x 2.5–3.5 cm ; lobes up to 4 x 6 mm; veins 8 with 4–5 anastomosing with zigzag excurrent vein; rhachis and sometimes costa shortly hairy above, glabrous or minutely hairy beneath. Indusium absent.




Swampy places on floor of evergreen forest, riverine forest.

Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Equatorial Guinea (incl. Bioko), Ghana, Liberia, Nigeria, Uganda.

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 207.
  • Verdcourt, B (2006) Thelypteridaceae.Flora of Tropical East Africa, Page 34.