Dryptodon trichophyllus

Dioicous. Asexual reproduction by broad-ellipsoid gemmae borne on the adaxial leaf surface and damaging leaf upon detachment. Cushions or mats on rock or rarely tree bases, green to yellowish green. Stems 15–30 mm long, reddish-brown, with red-brown rhizoids restricted to base, central strand present. Leaves erect to spreading when moist, flexuous when dry, lanceolate, 1.5–3 mm long, 0.3–0.7 mm wide, keeled; costa percurrent; apex acuminate, with a smooth to denticulate hyaline hairpoint to 1.2 mm long; margins entire, recurved in the basal 1/2–2/3 on one side, flat on the other or more narrowly recurved in the basal 1/3–1/2 on the other, or occasionally all margins plane; laminal cells in apical half isodiametric to rectangular, 6–18 μm long, 6–13 μm wide, smooth, bistratose at margins and in streaks in apical 2/3, sinuose, distinctly incrassate, usually abruptly transitioning to basal laminal cells near margin; cells near base rectangular 15–140 μm long, 5–15 μm wide, smooth, slightly sinuose adjacent to costa, more hyaline toward margin, with several rows clearly demarcated from the basal laminal cells closer to costa. Seta 2–5 mm long, yellowish, smooth, twisted anticlockwise. Capsule exserted, ellipsoid, symmetric, 0.9–1.4 mm long, yellow. Operculum mammillose to short-rostrate, 0.4–0.6 mm long. Calyptrae mitrate. Peristome present.