Macromitrium hemitrichodes

Pseudautoicous. Asexual propagules absent. Mats on trees and rocks, golden-green to olive-green, to 15 mm tall. Stems reddish brown to black, tomentose with purplish red rhizoids on lower surface where in contact with substrate. Branch leaves loosely and irregularly twisted-contorted with upper portion decurved to strongly inrolled when dry, erect-spreading when moist, lanceolate, 1.3–2.2 mm long, 0.3–0.65 mm wide; apex acute to obtuse; costa excurrent as a mucro; margin entire, plane to reflexed; laminal cells in apical half rounded, 7–13 μm long, 7–13 μm wide, with 2–4 papillae per cell; basal cells gradually becoming more elongate and rectangular toward base, to 50 μm long, 3.5–8 μm wide, a few inflated cells present at very base near costa to 15 μm wide, smooth or occasionally with a single papilla. Seta 4–10 mm long, golden brown toward base, yellow toward capsule, twisted clockwise. Calyptra sparsely hairy. Capsules erect, ovoid, 1.4–2 mm long, straight, yellow-brown. Peristome single; exostome teeth 16, becoming detached in old capsules; endostome absent. Operculum rostrate, 0.7–1 mm long.