Triplophyllum - Tectariaceae

Triplophyllum securidiforme (Hook.) Holttum var. securidiforme

Photo: C. Jongkind
Guinea

 

 

 

 

Synonyms

Aspidium securidiforme (Hook.) Mett. ex Kuhn
Ctenitis securidiformis (Hook.) Copel.
Dryopteris securidiformis (Hook.) C.Chr.
Nephrodium securidiforme (Mett.) Diels

Common name

Description

Rhizome at an angle. Fronds monomorphic, closely spaced, slightly leathery. Stipe dark brown, grooved, base with narrow black scales, over the whole lenght a very short brown tomentum, more or less deciduous. Lamina 2-pinnate (pinnate at the top, with single lower pinna again pinnate), deltoid in outline, c. 30 x 30 cm; segments trapezoid, about 4 cm long, apex obtuse, margin entire, with clearly auriculate upper base, the first pair of lower pinnae only more developed, distinctly lobed or even deeply pinnatifid; veins pinnate; median costa not bordering the lamina; brown when dry; rhachis with same short tomentum as stipe, other surfaces naked. Sori rounded; indusium persistant.

Notes

Derivation

Habitat

On ground, in forest.

Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Gambia, Ghana, Guinea, Ivory Coast, Liberia, Nigeria, Senegal, 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 198.
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8. Flore du Gabon, Pages 157 - 158.
  •