Orthodontium lineare

Autoicous. Dense turves on rotting or burnt wood. Stem to 8 mm long, brown, with scattered clear to red-brown rhizoids at the base. Leaves erect- to wide-spreading, scarcely altered when dry, linear-setaceous to linear-lanceolate, occasionally more broadly lanceolate, sometimes slightly secund, 2–6 mm long, 0.15–0.4 mm wide, concave and sheathing at base; apex acute; costa percurrent; margins sinuate to entire, flat, without a border; laminal cells elongate-hexagonal to long-rhomboidal or linear, 50–220 μm long, 7–30 μm wide, similar throughout but shortest at insertion, smooth. Seta (5–) 10–35 mm long, yellow to red, smooth. Capsule erect, cylindric, less often ovate-cylindric or narrowly pyriform, somewhat curved, 0.8–4.5 mm long. Operculum rostrate, usually obliquely, 0.3–0.5 mm long. Peristome double.