Plants very large, in loose mats, pale whitish yellow, in deep shade often green. Stems to 15 cm, regularly pinnate in one plane, branches to 15-20(-30) mm, straight to slightly curved. Stem leaves erect, triangular-ovate to broadly ovate-lanceolate, 3.5-4.5 × 1-1.8 mm; base slightly narrowed, narrowly decurrent; margins plane or recurved in places, serrulate throughout or occasionally subentire; apex gradually tapered, apiculate; costa to 70-90% leaf length, terminal spine sometimes present; alar cells elongate, 50 × 9 µm, region in up to 6 rows; laminal cells linear, 60-110 × 4-6 µm; basal cells elongate, region in 2 or 3 rows, gradually differentiated from distal cells. Branch leaves erect when dry or moist, oblong, narrower than stem leaves, to 3 × 0.8 mm in proximal portions of branches, smaller to minute near branch bases; margins plane to very narrowly recurved at places, more strongly serrulate; apex acute, sometimes blunt; costa to 70-90% leaf length, terminal spine absent; laminal cells very narrow, 50-95 × 4-5 µm; basal cells in fewer rows than those in stem leaves; distal cells smooth. Sexual condition dioicous or phyllodioicous. Seta to 2.5 cm, rough. Capsule horizontal, ovoid-oblong, curved, to 2.5 mm; annulus separating by fragments; operculum long-conic; peristome xerocastique, perfect; exostome teeth with long transitional zone; endostome basal membrane high, segments as long as exostome teeth, narrow, cilia as long as segments, appendiculate. Spores 10-20 µm.
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