Andreaea heinemannii

Autoicous. Cushions or tufts on rock. Stems to 8 mm long. Leaves usually secund and spreading when moist and dry, subulate, tapering from an oblong, ovate or elliptic base, 1.3–2.5 mm long, 0.2–0.8 mm wide, concave and sheathing at base; apices acuminate, variably flexed; costae extending to apex, c. 1/3 width of leaf at base; margins entire, plane; cells in apical half isodiametric to quadrate, 5–14 μm long, 8.5–18 μm wide, smooth, bistratose; basal cells near margins isodiametric to rectangular, c. 8 μm long, c. 9 μm wide, those near costa quadrate to rectangular, 12–28 μm long, 8–10 μm wide. Perigonial paraphyses very rare. Perichaetial leaves convolute and sheathing. Pseudopodium c. 0.5 mm long. Capsules c. 0.2 mm long. Turgid spores 23–32 (–36) μm diameter; shrivelled spores 22–27 μm diameter.