Acrostichum fluviatile Hook.
Campium fluviatile (Hook.) Copel.
Acrostichum phanerodictyon Baker
Leptochilus fluviatile (Hook.) C.Chr.
Leptochilus grossidentatus Bonap.

Rhizome long creeping; rhizome scales lanceolate in outline, margin entire, cells with light brown walls. Fronds subcoracios, without gemma on the apex. Stipe strawcoloured to green, 10-12 cm long, grooved, with few scales at the base. Lamina olive green when dry, simple, lanceolate to oblong in outline, 15-17 x 3-5 cm, with rounded wedgeshaped bases, apex tapering to a point, margins wavy; or lamina trifid with 2 or 4 lobes at the base, lobes same as but shorter than terminal one, decurrent on the stipe; or lamina pinnatifid. Veins not very marked; veinlets forming a row of very low costal areoles and 6-7 rows of areoles without included veinlets.

fluviatilis: found in or near a river.

Africa, Principe, Sao tomé.

Cameroon, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Liberia.

Terrestrial.