Sematophyllum subpinnatum

Autoicous. Asexual propagules absent. Mats on rocks, logs and tree trunks and branches. Stems to 4 cm long, sparingly branched, orange-brown, with occasional fascicles of red or orange-brown rhizoids. Leaves homomallous, elliptic, 1.2–2 mm long, 0.4–0.76 mm wide, somewhat concave, erect when moist, imbricate when dry; apices obtuse to acute; margins entire, plane to narrowly reflexed at base; cells linear or narrowly elliptic, 30–90 μm long, 5–6 μm wide, oblong-linear to elliptic and 7–10 μm long, 2–3 μm wide near apex; alar cells 3–6 in a row on either side of leaf base, inflated, oblong to rectangular, 30–90 μm long, 12–30 μm wide, yellow. Setae 10–15 mm long, purple, smooth. Capsules oblong-cylindric, erect to inclined, straight, 0.9–1.5 mm long. Operculum rostrate from conic base, 0.6–0.7 mm long.