1. Cryphaea D. Mohr & F. Weber 隐蒴藓属 yin shuo xian shu
Tab. Calyptr. Operc. . 1813 . Pilotrichum sect. Cryphaea (D. Mohr & F. Weber) Müll. Hal., Syn. Musc. Frond. 2: 163. 1851.
Plants slender to rather large, yellowish green to brown, on tree trunks or rocks. Primary stems creeping, slender, fragile; secondary stems short, ascending or pendulous, often sparsely branched with slender branches, rarely unbranched. Leaves imbricate when dry, erect-spreading when moist, ovate to oblong-ovate, rarely lanceolate, shortly acute to slenderly acuminate; margins often recurved, entire or serrulate near the apex; costae extending beyond mid-leaf, rarely excurrent; leaf cells oval or elliptical, thick-walled, smooth or papillose; juxtacostal cells elongate; alar cells rounded-quadrate to rounded-rhombic. Autoicous. Inner perichaetial leaves large, broadly oblong-ovate, abruptly long-acuminate toward apex. Setae short; capsules immersed, oblong-ovoid or cylindrical, reddish brown; opercula conic, shortly apiculate; peristome pale yellow, double; exostome teeth narrowly lanceolate, not striolate, papillose, more or less smooth below; endostome segments linear, nearly as long as the teeth; cilia absent. Calyptrae mitrate, often roughened above. Spores irregularly spherical, papillose.