3. Syntrichia longimucronata (X.-J. Li) R. H. Zand. 长尖赤藓 chang-jian chi xian
Bull. Buffalo Soc. Nat. Sci. 32: 269. 1993. Tortula longimucronata X.-J. Li, Acta Bot. Yunnan. 3: 107, f. 4. 1981. Type. China: Xizang, Jia-li Co., D.-D. Tao 5313a (holotype HKAS).
Plants rather robust, bright green, reddish brown when old, in loose tufts. Stems erect, simple or irregularly branched, radiculose at base; central strand present. Leaves contorted-curved to somewhat crisped when dry, spreading or sometimes reflexed when moist, oblong-elliptic to oblong-ligulate, broadly acute at apex, upper lamina broadly channeled or keeled, weakly sheathing at base; margins often recurved, crenulate by projecting papillae, usually forming a differentiated border, consisting of several rows of thick-walled, or sometimes elongated cells, yellowish or brownish; costa rather stout, often reddish brown, excurrent, ending in a long, hyaline awn, often denticulate on the back or at tips; upper leaf cells subquadrate to hexagonal, each cell densely covered with several C-shaped papillae; basal cells distinctly differentiated, rectangular, thin-walled, hyaline, smooth. Autoicous. Setae elongate, straight, reddish brown; capsules erect, cylindrical; peristome teeth 32, filiform, twisted, papillose.