Asplenium - Aspleniaceae

Asplenium smedsii Pic. Serm.

 

 

 

 

Synonyms

Common name

Description

Rhizome short, erect, rhizome scales chestnut-brown, triangular in outline, apex long tapering to a point, margin entire or fimbriate-lobed, ending in hair-tip, up to 11 × 4 mm. Fronds tufted, thin, erect, olive-green, not proliferous. Stipe matt brown, sometimes green beneath, 8–30 cm long, with dense scales near base, otherwise with scattered narrowly triangular scales to 10 × 3 mm. Lamina elliptic to oblong-elliptic in outline, 18–47 × 7–15(–24) cm, 1-pinnate; lower pinnae slightly smaller, apical pinnae gradually decrescent. Pinnae in 14–24 pairs, equidistant, stalked, triangular or lanceolate-triangular in outline, (2–)4–8(–12)x(0.7–)1.2–1.6 cm, base unequal, the acroscopic base broadly cuneate, the basiscopic base narrowly cuneate-excised, margin deeply serrate with often bifid teeth, apex long-attenuate, glabrous above, sparsely scaly beneath. Rachis brown, with two narrow green lines, with sparse scales. Sori many per pinna, at a 45° angle to the costa, elliptic, 2.5–6 mm long; indusium membranous, entire.

Notes

Derivation

Habitat

Moist evergreen forest, deep shade, moist upland forest.

Distribution worldwide

See African distribution.

Distribution in Africa

Burundi, Dem. Republic of Congo, Ethiopia, Kenya, Malawi, Rwanda, Sudan and South Sudan, Tanzania , Uganda.

Growth form

Epiphytic, lithophytic, terrestrial.

Literature

  • Beentje, H.J. (2008) Aspleniaceae. Flora of Tropical East Africa, Pages 32 - 33. (Includes a picture).
  • Burrows, J.E. & Willis, C.K. (eds) (2005) Plants of the Nyika Plateau. Southern African Botanical Diversity Network Report No. 31, SABONET, Pretoria. Page 27.
  • 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 97.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Page 171.
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