Sematophyllum brachycarpum (Hampe) Broth.

A close bark-epiphyte, especially on decayed stumps, forming compact, dark green to yellowish, shining mats, usually abundantly fertile. Prostrate stems 1-4 cm long, sparingly or pinnately branched; the branches ascending; the leaves often regular round the ascending stems, but at the apex, especially of horizontal stems and branches, more or less secund upward; leaves spreading when moist, ascending when dry, lanceolate-subulate, entire, very concave except toward the apex, which is flat; the margin ascending or somewhat flattened outward or reflexed toward the base; nerve absent; alar group of about three large cells, with a few small quadrate cells in three or four rows above them up the margin; other cells linear-rhomboid, pellucid, smooth. Some leaves narrower than others. Perichaetium rooting; per. leaves few, like the stem leaves, not closely sheathing. Seta red, smooth, slender, 5-7 mm long; capsule small, horizontal or somewhat hanging, oval; the lid wider, rostrate from a convex base; calyptra cucullate, rostrate, long, covering the capsule at first. Capsule on maturity constricted below the very wide mouth. Outer perichaetal teeth usually inflexed, thick, and having a line of about twelve prominent papillose mamillae along the central line on the inner surface; processes as high as the teeth, keeled, papillose below, with high basal membrane and single cilia between. Spores large.