Plants terricolous, scattered, pale green to yellow. Stems simple, to 1 mm, transverse section circular to elliptical, central strand present, sometimes hollow, sclerodermis absent, hyalodermis absent, outermost cells with somewhat thickened external walls. Leaves broadly obovate to ovate in the lower parts of stem, to ca 0.8 mm; upper leaves ovate to ovate lanceolate, to 3.5 mm (inclusive of awns), margins plane to broadly incurved, entire in lower leaves but with long, narrow cells forming a dentate to laciniate border in upper ones; costa strong, yellow, percurrent in lower leaves to long excurrent and forming a yellowish, smooth to weakly knotted, awn in upper leaves, superficial cells on both surfaces elongate, smooth below and weakly low prorate-papillose toward apex, transverse section semicircular to rounded distally, dorsal stereid band present or represented by substerejd cells, dorsal epidermis present, hydroid strand present, guide cells 2-3, often exposed ventrally, sometimes absent in upper leaves, ventral stereid band absent, ventral epidermis present, on upper leaves differentiated as somewhat enlarged, thin-walled cells, frequently absent below mid-leaf; upper laminal cells quadrate to rounded-hexagonal, 9-12(-14) µm wide, toward mid-leaf more rectangular, to 1.5-2:1, rather evenly thin-walled, papillae mostly present on dorsal surface, small, hollow, simple, 4-5 per cell, ventral surface bulging; marginal cells undifferentiated in lower leaves, but mid and upper leaves with a large distal patch of strongly radially elongated, thick-walled and smooth cells forming a distinct toothed border, often laciniate or V-notched on one side; basal cells strongly differentiated in lower 1/3-1/2, rectangular, 18-22 µm wide, 2.5-3:1, thin-walled,-smooth. Autoicous, antheridia in clusters in axils of cucullate lower leaves. Perichaetia terminal, leaves strongly differentiated, larger (to 4 mm), with long awns, sheathing, thin walled cells occupying most of leaf except for the strongly differentiated margins that are usually laciniate-toothed near apex. Seta short, 0.4-0.6 mm, 1 per perichaetium, brown, straight. Capsule immersed in perichaetial leaves, 0.6-0.9 mm, brown, short cylindric to urceolate, macrostomous, base truncate, neck poorly differentiated; exothecial cells 14-18 µm wide, rectangular, 4-6:1, incras-sate, somewhat bulging on outer surface, 3-4 rows at mouth transversely elongated; stomata few and restricted to base, phanerophore; annulus weakly differentiated as a single row of quadrate cells; peristome absent. Operculum flat to slightly umbonate, cells quadrate to short rectangular, thin-walled, ± concentrically arranged. Calyptra long-conic to mitrate, ca 0.6 mm long, base entire or with 4-6 lobes, grey to yellowish, cells rectangular, thick-walled, with thickened prorate-papillose upper ends. Spores spherical to reniform, light-to yellow-brown, densely papillose, 19-27 µm. Laminal KOH colour reaction yellow to somewhat orange-yellow.
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