Species

Asplenium chaseanum Schelpe

Synonyms
Common name
Description	Rhizome erect, c. 4 mm diameter; rhizome scales awl-shaped, up to 3 mm long, margins entire, dark brown. Fronds monomorphic, tufted, arching, thinly coriaceous, not gemmiferous. Stipe up to 15 cm, black, sparsely set with brown scales c. 2 mm long. Lamina up to 12 × 7 cm, deeply 2-pinnatifid, oblong-acute in outline, basal pinnae slightly reduced; pinnae up to 5 × 1.5 cm, elongate-trapeziform in outline, glabrous on both sides, deeply pinnatifid into narrowly oblong lobes with irregularly toothed apices; veins obscure; rhachis black, with narrow greenish wings in the upper part, glabrous except for a few scales similar to those on the stipe. Sori up to 1 cm long, linear; indusium entire.
Notes	Distinguished from other taxa by its relatively short, deeply bipinnatifid, oblong, acute fronds.
Derivation
Habitat	Shade in evergreen forest, on rocks, near waterfalls and in beds of seasonal rivulets.
Distribution worldwide	See African distribution.
Distribution in Africa	Dem. Republic of Congo , Zambia .
Growth form	Lithophytic, terrestrial.
Literature	Kornas, J. (1979) Distribution and ecology of the Pteridophytes in Zambia. Polska Akademia Nauk Wydzial II Nauk Biologicznych. Pages 97 - 98. 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 82. Roux, J.P. (2001) Conspectus of Southern African Pteridophyta.Southern African Botanical Diversity Network Report, 13 Page 163. Schelpe, E.A.C.L.E. (1970) Pteridophyta.Flora Zambesiaca, 0 Page 183. Schelpe, E.A.C.L.E. (1967) New taxa of Pteridophyta from South East Tropical Africa.Boletim da Sociedade Broteriana, Sér. 2, 41 Page 206.