9. Pseudopterobryum Broth. 滇蕨藓属 dian jue xian shu
Symb. Sin. 4: 79. 1929.
Plants rather large, thick, to 15 cm long, green, yellowish green or yellowish brown, in loose tufts. Primary stems short, prostrate with brownish rhizoids; secondary stems dendroid, not branched below, densely pinnately branched above, densely foliate. Stem and branch leaves similar, ovate-lanceolate, narrowly acuminate at the apex, constricted at the base, concave, often plicate; margins slightly incurved and denticulate above, entire below; costae single, slender, extending to mid-leaf or somewhat beyond the mid-leaf; leaf cells elongate-rectangular to linear, smooth; alar cells small, numerous, quadrate or irregularly rhombic, slightly inflated. Dioicous. Inner perichaetial leaves erect, narrowly lanceolate, sheathing at the base. Setae very short; capsules immersed, ovoid; opercula conic, shortly or obliquely rostrate; annuli not developed; exothecial cells hexagonal; peristome double, inserted slightly below the mouth; exostome teeth lanceolate, slightly striolate below; endostome segments linear, smooth. Calyptrae mitrate, papillose, deeply lobed at the base. Spores spherical, brown, smooth.