Plants decumbent; stems with apices ascending, old stems with scattered rhizoids; branching system diffuse, not or weakly apically dominant, 2 or 3-furcate; branch ends curling inwards when dry. Leaves dimorphic, upper surface yellow-green when fresh, undersurface creamy green; median (dorsal) leaves overlapping, asymmetrically ovate-rectangular in outline, margins subentire or with few fine serrations, 1.5-1.7 x 0.7-0.8 mm; lateral leaves asymmetrically oblong-elliptic in outline, apex pointed, base adnate, margin subentire and with a widely spaced ciliate appearance, 1.9-2.1 x 0.8-1.0 mm. Strobili short, up to 3 mm long, moderately dimorphic; sporophylls slightly shorter than the sterile leaves.

nubigena: cloud-loving, this fern is endemic to the high altitudes of the Drakensberg in South Africa.

Restricted to basalt, on bare walls or in cliff crevices; or on sandstone cliffs.

See African distribution.

South Africa.

Lithophytic, terrestrial.