Plants robust, brownish below and olivaceous green to more yellowish green in their uppermost part, frequently whitish or grayish due to long hair-points. Stem up to 12 cm, pinnately or subpinnately branched or more rarely with fewer branchlets. Leaves often slightly or distinctly falcate, 3-4(6.5) x 0.7-1.0 mm. Hair-point strongly flexuose, from absent to usually long or very long, mostly about 0.5-1 mm (T: 0.5-0.75 mm; in other specimens to 3-4 mm), edenticulate or obtusely low-denticulate and not or slightly decurrent down margin of lamina. Margin broadly recurved on one side to some distance below the hair-point, and more narrowly and usually shortly recurved or quite flat on the other side, unistratose. Costa thin and narrow, convex at the dorsal side in upper part and rather flat on both sides below, in lower part 70-90 µm broad, in upper part 30-50 µm broad, reaching to or ending shortly before the hyaline point, in basal part bistratose, sometimes with a trace of a third stratum (d. 8-16(22), c. 0-1, v. 3-4), in central part bistratose (d. 7-16(20), c. 0, v. 2(-3)), in upper part bistratose (d. 5-10, c. 0, v. 2). Lamina unistratose. Basal laminal cells elongate (T: 38-60 x 9 µm), middle and upper cells also usually elongate (T: 15-35 x 7.5 µm), upper marginal cells quadrate to rectangular (T: 7-14 x 10 µm), cell walls from not or slightly to sometimes distinctly bulging dorsally and ventrally, in lower part about two times as broad as the cell lumen. Alar cells not or slightly yellowish or sometimes orange, one row of 10-25(30) differentiated, pellucid and usually thin-walled and esinuose (but sometimes more thick-walled and slightly sinuose) cells extending as a border up along the margin. Perichaetial leaves not squarrose when wet, inner (4-5) leaves epilose, with ovate base (with pellucid ± sinuose cells) and acute to acuminate apex (with chlorophyllous sinuose cells). Seta about 6.0-8.5 mm. Urn narrowly oblong-cylindrical (2.0-2.5 x 0.5 mm), exothecial cells narrow and elongate with thick walls, 4-6 rows of incrassate, small and rounded cells at the month. Teeth (ca. 280 µm long,) of 2 prongs with median line perforated, coarsely papillose, no basal membrane. Spores 12-14 µm. (1 fertile specimen.)
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