16. Rhaphidostichum Fleisch. 狗尾藓属 gou wei xian shu
Musci Buitenzorg 4: 1307. 1923.
Plants rather robust, somewhat glossy, in dense patches. Stems prostrate, irregularly pinnately branched; branches erect-spreading or erect. Leaves arranged in numerous ranks, nearly complanate, erect or erect-spreading, ovate or oblong-ovate, spathulately concave, acute, shortly acuminate or slenderly acuminate to long piliform; margins weakly serrulate at apex; costae absent; leaf cells narrowly rhomboidal, thick-walled, sometimes pitted, smooth or papillose; basal cells slightly shorter; alar region consisting of one row of inflated cells, yellowish and hyaline, with few shorter and smaller cells above. Monoicous or dioicous. Setae slender, elongate, smooth below, mammillose above; capsules small, inclined or pendent, oblong-ovoid or cylindrical; opercula conic at base, obliquely and slenderly rostrate; peristome double; exostome teeth narrowly lanceolate, outer surface clearly with a median line, cross-striate below, hyaline, papillose above, inner surface clearly trabeculate; endostome segments as high as exostome teeth, keeled; basal membrane high; cilia 1–2, slightly shorter than segments. Spores small, smooth.