Corm 3-lobed, up to 5 mm wide, bud scales 2–2.5 × c. 1.5 mm, cuspidate, pale green. Leaves 15–21, 55–62 mm long, 1.2–1.6 mm wide at base, 0.4– 0.6 mm wide at apex, tapering gradually to an acute apex. Ligule not seen. Velum absent. Megasporangia 2.2–2.6 × 1.2–1.4 mm, sporangium wall dark brownish to blackish. Megaspores c. 400 × 400 μm; proximal face trilete, evenly tuberculate with small and dense tubercles 28–30 μm in diam., ridges c. 50 μm wide and c. 33 μm high, areoles and ridges with dense threads; distal face densely pustulate-tuberculate with larger, rounded pustules 39.9–60 μm in diam. intermixed with smaller tubercles, sometimes anastomosing, up to 26 μm in diam., larger pustules sometimes anastomosing, dense threads between pustules, only apex of pustules ± free of waxes. Microspores not seen.

rwandensis: from Rwanda, this ferns was first discovered in Rwanda where the species is probably endemic.

In small, temporary pools on ferricretes.

See African distribution.

Rwanda.

Terrestrial.