Plants loosely cespitose to gregarious, blackish green distally, brown proximally. Stems very short, to 0.2 cm, central strand present, sclerodermis absent, hyalodermis absent; axillary hairs 2-3 cells long, all hyaline. Stem leaves appressed when dry, weakly spreading when moist to rosulate, oblong, 1.2-2 mm, elliptic or spathulate, distal lamina broadly channeled to deeply concave, margins plane, entire; apex broadly acute; base oblong or not differentiated, alar region often enlarged and bulging; costa percurrent to shortly and stoutly excurrent, adaxial superficial cells elongate, (2-)4 rows of cells across costa adaxially at mid leaf, costal transverse section oval to circular, two stereid bands present, adaxially small, epidermis differentiated adaxially, present or occasionally absent abaxially, guide cells 2 in 1 layer, hydroid strand absent, distal laminal cells subquadrate to subrectangular, occasionally rhomboid, walls thin, occasionally evenly thickened, superficially adaxially bulging, abaxially flat, (8-)11-13(-15) mm wide, 1-2:1; papillae absent; proximal cells differentiated across leaf in a small area or up to 1/3 leaf length, alar cells often sharply bulging, proximal cells rectangular and curved. Specialized asexual reproduction absent. Sexual condition dioicous. Perichaetia terminal, interior leaves ovate, weakly sheathing in proximal 1/2-2/3, proximal cells rhomboid. Seta 0.4-1 cm. Theca (0.3-)1-1.7 mm, cylindric to elliptic, annulus deciduous, revoluble, 1-2 rows of strongly vesiculose cells; peristome teeth of 32 narrow rami, filamentous, 500-1200 µm, twisted counterclockwise, operculum long-conic. Calyptra cucullate. Spores small, 9-11 µm. Distal laminal KOH color reaction strongly yellow orange, occasionally medium orange.
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