Lomariopsis - Lomariopsidaceae

Lomariopsis warneckei (Hieron.) Alston

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Mozambique

Photo: P. Ballings
Zimbabwe

 

 

 

 

Synonyms

Stenochlaena warneckei Hieron
Lomariopsis nigrescens Holttum

Common name

Description

Rhizome long, climbing, 0.5-10 mm in diameter; rhizome scales brown to dark brown, concolorous, narrowly lanceolate in outline, apex tapering to a point, margin (sub)entire to ciliate near the apex, up to 7 × 2 mm. Fronds spaced apart, arching, thinly coriaceous, strongly dimorphous. Stipe brown, up to 45 cm long in sterile fronds, up to 32 cm long in fertile fronds, scales similar to those on the rhizome, becoming glabrous, except towards the base. Sterile lamina up to 35-68 x 12-26 cm, narrowly ovate to lanceolate in outline, imparipinnate, up to 19 pairs of pinnae; pinnae 7.5-15 x 1-2.2 cm, alternate, shortly petiolate, linear-lanceolate, apex tapering to a point, base wedge-shaped to rounded, margins finely crenate, rhachis and costae with sparse reduced linear-lanceolate scales and hairs. Fertile lamina up to 42 × 15 cm, narrowly lanceolate in outline; pinnae 7-14 x 0.4-0.8 cm, 14-20 pairs, shortly petiolate, linear, apex with a long drawn out point, base unequally wedge-shaped, rhachis brown, grooved, glabrous or with few brown scales. Sori cover the entire undersurface of the fertile pinnae.

Notes

Can be confused with Stenochlaena tenuifolia, this fern however has stif sterile pinnae with toothed margins and bipinnate fertile fronds.

Derivation

warneckei: named after Otto Warnecke, a German botanist who collected the type specimen of this fern in Tanzania.

Habitat

Deep shade of low-altitude evergreen forest.

Distribution worldwide

Distribution in Africa

Burundi, Equatorial Guinea (incl. Bioko), Kenya, Malawi, Mozambique, Rwanda, Tanzania , Uganda, Zimbabwe.

Growth form

Epiphytic, terrestrial.

Literature

  • Burrows, J.E. (1990) Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 293 - 294.
  • Jacobsen, W.B.G. (1983) The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Page 427. (Includes a picture).
  • Mickel, J.T. (2002) Lomariopsidaceae. Flora of Tropical East Africa, Pages 28 - 30. (Includes a picture).
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Page 146.
  • 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 146.
  • Schelpe, E.A.C.L.E. (1970) Pteridophyta. Flora Zambesiaca, 0 Pages 216 - 217. (Includes a picture).
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