Pneumatopteris unita (Kunze) Holtt.

unita: united; refers to the several pairs of veins which meet (anostomose)below the sinus between adjacent pinna lobes.

Rhizome erect to suberect. Fronds tufted, arching, proliferous on the rhachis near the apex, herbaceous. Stipe up to 60 cm long, pale brown, hairless, with a swollen aerophore at the base. Lamina up to 1.8 × 0.5 m, ovate-lanceolate to linear-oblong in outline, pinnate, apex with terminal pinna narrowly deltoid, lobed, lower pinnae hardly reduced in size, somewhat deflexed. Pinnae narrowly oblong, sessile, base truncate, apex long and abruptly tapering to a point, margin shallowly incised into broadly oblong, rounded, entire lobes with 4-5 pairs of veins meeting below the sinus; undersurface sparsely set with short white hairs on costae, costules and veins, upper surface with sporadic pale hairs. Rhachis pale brown, hairless, kinked where the gemmae emerge. Sori round, small, situated close to the costules in the basal half of each lobe; exindusiate.

Bioko, Burundi, DRC, Ethiopia, Kenya, Liberia, Madagascar, Malawi, Mozambique, Rwanda, South Africa, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zimbabwe.