Plants medium-sized, forming mats, yellowish green or greenish brown above to brown below; corticolous or rarely saxicolous. Primary stem tomentose below; rhizoids smooth, reddish brown to brown; secondary stems numerous, 2-8 mm tall, branching by sub-perichaetial innovations; in section inner cortex 9-13 cells across, incrassate, outer cortical cells smaller, in 1-4 rows, consisting of stereids, outer surface rough. Stem leaves secund, lanceolate, 0.8-1.5(-l.8) mm long. Branch leaves crowded, tightly inrolled, twisted when dry, erect-spreading when wet, rugulose below, unistratose or frequently with bistratose patches; generally ligulate, (1.2-) 1.6-2.3(-2.5) mm long; ventral surface keeled; apex rounded-obtuse; margins plane, frequently recurved on one side. Costa ending below to percurrent; superficial cells linear, bulging; in section subround, bulging dorsally, consisting of stereids. Upper laminal cells small, rounded-hexagonal to rounded-quadrate, incrassate, bulging, 7.5-10.0 µm, papillae low, blunt, scattered over lumen; basal cells smooth, rarely papillose below, rectangular, longitudinal walls incrassate, frequently sinuate. Pseudautoicous; dwarf male plants axillary, rarely on leaf base, 0.5-1.2 mm long, branching by subperigonial innovations. Perichaetia terminal; leaves erect, longer than branch leaves, broadly lanceolate or oblong-lanceolate, (2.0-) 2.2-2.8(-3.1) mm long. Seta (1.7-)2.2-2.8(-3.1) mm long, yellowish brown or reddish brown. Capsule ovate-cylindrical, (1.2-)1.5-1.8(-2.0) mm long, yellowish brown or reddish brown, weakly ribbed dry, mouth erect, neck differentiated; exothecial cells irregularly quadrate to rectangular, incrassate, smaller at mouth. Peristome single, inserted below mouth; teeth 16, occasionally in pairs, narrowly oblong, blunt, 155-250 µm long, yellowish, papillose-striolate. Operculum 1.0-1.3 mm long. Calyptra 2.5-3.5 mm long, deeply plicate, lacerate below, naked or sparsely hairy. Spores 12.0-30.0(-36.0) µm, minutely papillose; aniso-sporous.
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