Monoicous or dioicous. Epiphyllous or generally on bark, pale green-olivaceous green, prostrate. Stem 4-5 cm long, irregularly branched, 120-140 µ in diameter. Leaves approximate or imbricate. Lobe plane, not crossing the stem, oval, asymmetrical, dorsal margin strongly arched, ventral margin only slightly arched, apex rounded and obtuse, sometimes denticulate. Lobule inflated, fusiform, keel slightly arched, apical tooth acute, 2-3 cells long, free margin sometimes incurved, convex, with 1-3 teeth, hyaline papilla on the inside, proximal from the apical tooth. Leaf cells hexagonal, elongated, walls thin, trigones and intermediar thickenings present. Marginal cells 14-16 x 16 µ, cells in the centre 30-40 x 19-27 µ, basal cells 30-38 x 60-70 µ, Amphigastria subcircular, approximate, truncate, emarginate, margin entire or crenulate, base decurrent, insertion arched. Androecia terminal on a lateral branch, with 3-8 pairs of bracts, bracts densely imbricate, lobe obtuse, bracteoles resembling the amphigastria, antheridia in pairs. Female inflorescence apical on a ± elongated branch, no innovations. Female bracts larger than the leaves, lobe with apex acute, denticulate with acute teeth, lobule reduced to a fold. Bracteole ovale, apex bidentate with teeth acute and sinus obtuse, margin irregularly denticulated. Perianth exceeding the bracts, oboval, compressed, with two lateral keels bordered by wings irregularly lacinulate and one obtuse ventral keel. Rostrum 80-100 µ long. Vegetative reproduction by means of disciform gemmae from the dorsal face of leaves.
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