Antrophyum - Adiantaceae

Antrophyum immersum (Bory ex Willd.) Hook. & Baker

 

 

 

 

Synonyms

Hemionitis hookeriana C.Presl.
Antrophyum pumilum Kaulf.
Antrophyum hookerianum Kunze
Hemionitis immersa Willd.

Common name

Description

Rhizome short, rhizome scales lanceolate in outline, margins with short processes, long-tapering, the cells with red-brown walls. Fronds tufted. Stipe 0.5–5 cm long. Lamina oblanceolate to obovate in outline, 3–19 cm × 1.5–3.5 cm, apex acute to rounded, base narrowly decurrent into a stipe, juvenile fronds very rounded; midrib only apparent at the extreme base. Sori deeply immersed in narrow grooves, widely reticulate.

Notes

Differs from other taxa by having sori that are immersed in grooves in the lamina. Lamina is oblanceolate to obovate and with a stipe.

Derivation

immersum: from latin meaning submerged, a reference to the sori that are immersed in grooves in the lamina.

Habitat

Rain-forest, epiphytic on trees and mossy stumps, also on vertical rock faces.

Distribution worldwide

Comoro Isl., Liberia, Madagascar, Mauritius, Réunion, Tanzania, Uganda.

Distribution in Africa

Liberia, Tanzania , Uganda.

Growth form

Epiphytic, lithophytic.

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 72.
  • Verdcourt, B. (1999) Vittariaceae. Flora of Tropical East Africa, Page 7.
  •