Species

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.