Plants pale-to dark olive green, in loose tufts. Stems 2-6(-8) cm, simple or branching by inno-vations, bracteate proximally, gradually larger distally. Leaves 5-6 mm, crisped and contorted when dry, when moist laxly spreading, plane, ovate-lanceolate to elliptic-oblong, abruptly acuminate at the apex, ending in a short spine, the margins coarsely and sharply serrate to the middle or below; costa percurrent or shortly excurrent in the apex, with a few low dentate abaxial lamellae or lamelliform teeth near the apex; abaxial surface of lamina smooth or with a few scattered teeth; adaxial lamellae 4-6, straight, not undulate, 3-5(-8) cells high, entire in profile; median basal cells short-rectangular, 3:1, rather thin-walled, finely striate-papillose; median cells of lamina 20-30 µm, subquadrate to hexagonal, thin-to firm-walled with minute trigones, smooth; 1-3 rows of cells along the margins evenly thicker-walled, often colored, the marginal serrations ending in a short tooth cell, with 2-4 supporting cells; perichaetial leaves 6.5-7 mm, subsheathing at base, spreading. Seta to 5 cm, 1(-2) per perichaetium, reddish, wiry. Capsule 4-7 mm, light yellowish brown, greenish near base, reddish at the mouth, cylindric, slightly curved, somewhat larger toward the base, strongly contracted below the mouth when dry, the surface rugose; exothecial cells irregularly short-rectangular to hexagonal, rather thin-walled, smooth, much smaller and thicker-walled below the mouth; stomata superficial, numerous in proximal 1/4 of capsule; peristome teeth 32, obtuse to truncate at the apex. Spores 12-16 µm.
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