Mittenia plumula

Turves or scattered shoots on soils derived from granite, basalt or sandstone, rarely on rock, grass green to dark green. Stems 5–20 mm long, green above, grading to dark red-brown near base, with yellow-brown rhizoids near base. Leaves asymmetric, oblong or broadly elliptic, obliquely orientated, decurrent nearly to leaf below, 0.9–1.3 mm long, c. 0.4–0.55 mm wide, flat, becoming more crowded toward stem apex; costae ill-defined, extending to c. 6–10 cells below apex, absent in leaves near stem base; apices obtuse, without a hairpoint; margins entire, plane, without a border; laminal cells quadrate to rounded-hexagonal, isodiametric, 15–29 μm wide, smooth. Setae 2–4 mm long, pale greenish yellow, smooth, occasionally paired. Capsules cylindric, erect, straight, 0.7–1.25 mm long, pale brown. Calyptra short-conic, persistent on operculum tip. Operculum obliquely rostrate from conic base, 0.7–1.25 mm long.