Plants small to very small, gregarious, dark green to olive-green; terricolous. Stems short, to 3 mm high, simple; in section without central strand, cortical cells thin-walled, gradually smaller toward margins. Leaves incurved dry, widespreading wet; lingulate to ovate-lingulate, 0.8-2.0 mm long, frequently constricted above base; apex piliferous; base sheathing; margins entire to serrulate, broadly involute above base. Costa long-excurrent, to 1 mm long, fragile, hyaline, smooth; ventral surface bearing numerous cylindrical filaments, dorsal superficial cells rounded, quadrate to rectangular; in section flattened, undifferentiated, 2-4 cells thick, ventral cells thin-walled, ventral filaments 4-8 cells high, lower filament cells round, becoming cylindrical above, terminal cells elliptical-acute, strongly thickened apically, dorsal surface cells strongly thickened. Upper laminal cells transversely elongate, incrassate, strongly incrassate dorsally, smooth; basal cells quadrate to rectangular. Dioicous. Perichaetia terminal, leaves clasping, variable in shape. Seta 7-8 mm long, yellowish red; capsule cylindrical to ovoid-cylindrical, 1.5-2.5 mm long, dark red; peristome spirally twisted, teeth linear above short basal membrane, yellowish, finely papillose; operculum conical, erect, to 1 mm long; spores round, 10-12 µm, finely papillose to almost smooth.
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Plants to 3 mm. Leaves lingulate to ovate-lingulate, 1-2.5 mm, margins entire to serrulate, undifferentiated at base, apex piliferous, open, broadly obtuse or rounded; costa undifferentiated, with few or no stereid cells, filaments of 4-8 cells, cells subspheric to cylindric; cells of leaf base 18-37 µm, medial and distal cells 9-22 µm, papillae none. Sexual condition dioicous. Seta 6-14 mm. Capsule urn cylindric to ovoid cylindric, 1.7-3.2 mm; operculum conical, rostrate, erect or slightly inclined, 0.9-1.4 mm; peristome 800-1230 µm, strongly twisted; spores 9-24 µm.
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