Abrodictyum - Hymenophyllaceae

Abrodictyum guineense (Afzel. ex Sw.) J.P.Roux

 

 

 

 

Synonyms

Trichomanes hartii Baker
Trichomanes latisectum H.Christ
Trichomanes batrachoglossum Copel.
Trichomanes guineense Afzel. ex Sw.

Common name

Description

Rhizome slender, short, suberect. Fronds monomorphic, tufted, firm. Stipes 3-7.5 cm long, winged in the upper part, naked except for a few fibrillose paleae towards the base. Lamina tripinnatifid, deltoid, 7.5-15 cm long, dark green, glabrous, except for a few paleae on the midrib on both surfaces; pinnae c. 10 pairs, 8-12 jugate, lanceolate, except the lowest largest pair deltoid, crowded, sessile; ultimate segments oblong, rounded, entire or slightly toothed; rhachis distinctly winged down to the base; veins stout, distinct, usually forked; intermediate faint veinlets none. Sori usually only one in each secondary segment, except on the lowest pair of pinnae, involucre narrowly funnel shaped, truncate or obscurely toothed at the throat, receptacle sometimes 3 times as long as the involucre.

Notes

Derivation

guineense: from Guinee

Habitat

In damp shade on banks, at low elevations.

Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Congo, Equatorial Guinea (incl. Bioko), Gabon, Ghana, Guinea, Ivory Coast, Liberia, Nigeria, Sierra Leone.

Growth form

Terrestrial.

Literature

  • 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 37.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3. Flore du Cameroun, Page 91.
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8. Flore du Gabon, Page 66.
  •