Rosulabryum billarderii

Dioicous. Asexual reproduction by globose or ellipsoid, orange or red rhizoidal tubers. Loose or dense tufts or turfs on soil, wood or soil over rock, green or yellow-green. Stems simple or repeatedly branched by innovation, 10–60 mm tall, red-brown, with a brown tomentum toward base. Rhizoids brown to reddish brown. Leaves rosulate, erect- or wide-spreading when moist, ±contorted and often twisted around leaf apex when dry, ovate or oblong to obovate, 1.5–5 (–6) mm long, 1–1.8 (–2.5) mm wide; costa strong, excurrent forming a mucro; margin distinctly toothed toward apex, strongly recurved in basal ¾, with 1–3 rows of narrower cells forming a distinct border; laminal cells in apical half rhomboidal-hexagonal, 40–81 μm long, 12–23 μm wide; basal laminal cells ±broadly rectangular. Seta 20–30 mm long. Capsule pendent to horizontal, ellipsoid to cylindric or obloid-cylindric, 3–6 mm long, curved.