7. Cryptopapillaria M. Menzel 隐松萝藓属 yin song luo xian shu
Willdenowia 22: 181. 1992.
Plants soft or somewhat rigid, slender, grayish green, dark green or blackish when old, not or slightly glossy, usually in pendulous or loose mats. Stems elongate, remotely and irregularly pinnately branched, pendulous; branches usually simple, obtuse or attenuate at the apex. Stem leaves imbricate, appressed when dry, broadly ovate to oblong-ovate, somewhat concave, distinctly plicate, gradually to rather abruptly acuminate at the apex, strongly auriculate, often clasping at the base; margins serrulate, especially so at the auriculate bases; costae single, ending at mid-leaf or slightly longer; leaf cells elongate-rhomboidal, pluripapillose with papillae on the longitudinal cell wall; cells at auriculate bases rhomboidal, smooth; branch leaves similar to stem leaves, rather abruptly and shortly acuminate, slightly twisted at the apex; axillary hairs consisting of 3 short, brownish basal cells, and 3 rectangular, hyaline, upper cells. Dioicous. Inner perichaetial leaves linear-lanceolate, plicate. Setae very short, roughened; capsules immersed, cylindrical, ca. 2 mm long; opercula conic, obliquely long rostrate; annuli not differentiated; peristome double; exostome teeth narrowly lanceolate, minutely papillose, more or less hyaline, perforate near the apex; endostome segments linear, nearly as long as the teeth; basal membrane very low; cilia none. Calyptrae campanulate, small, densely hairy. Spores spherical, 20–30 µm in diameter, minutely papillose.