Trichostomum tenuirostre Lindberg 1864

Stem rounded-pentagonal in section. Leaves flattened, lanceolate, distal margins plane, entire or weakly toothed, not bordered; apex acute, plane or keeled; basal cells differentiated across leaf base as a U or V, commonly running up margins, not distinctly enlarged submarginally; distal laminal cells pluripapillose with low papillae; mucro conic, of 3-6 cells. Sexual condition dioicous. Peristome teeth bluntly lanceolate.

Plants small to medium-sized, 10–30(–40) mm high, yellowish green to light brown, in dense tufts. Stems erect, usually irregularly branched. Leaves strongly crisped when dry, erect-spreading or weakly reflexed when moist, linear-lanceolate, acuminate or setaceous at apex, weakly sheathing at base; margins usually undulate and wavy, crenulate by projecting papillae; costa slender, percurrent; upper leaf cells quadrate to hexagonal, rather thin-walled, green and obscure, each cell with several large, circular papillae on both surfaces; basal cells slightly elongate, rectangular, smooth. Sporophytes not seen.

Distribution: China, India, Japan, Russia, Europe, Africa, North and South America.

Habitat: on soil, forest ground, or rocks in shade; also on tree bases.

Weissia tenuirostris Hooker & Taylor, Muscol. Brit. ed. 2, 83. 1827; Oxystegus tenuirostris (Hooker & Taylor) A. Smith

Didymodon tenuirostris (Hook. f. & Tayl.) Wils., Hooker's J. Bot. Kew Gard. Misc. 3: 378. 1841. Trichostomum cuspidatum (Dozy & Molk.) Dozy & Molk., Bryol. Jav. 1: 96, f. 78. 1859. Oxystegus cuspidatus (Dozy & Molk.) P.-C. Chen, Hedwigia 80: 143. 1941. Didymodon cuspidatus Dozy & Molk. in Zoll., Syst. Verz. 31. 1854. Trichostomum cylindricum (Brid.) C. Müll., Syn. Musc. Frond. 1: 586. 1849, hom. illeg. Didymodon cylindricus (Brid.) Bruch & Schimp., Bryol. Eur. 2: 139. (fasc. 29–30. Monogr. 5. 3). 1846, hom. illeg. Oxystegus cylindricus (Brid.) Hilp., Beih. Bot. Centralbl. 50(2): 620. 1933. Tortella cylindrica (Brid.) Loeske, Stud. Morph. Syst. Laubm. 97. 1910. Weissia cylindrica Bruch. ex Brid., Bryol. Univ. 1: 806. 1827. Trichostomum cylindricum var. denticuspis Broth., Symb. Sin. 4: 33. 1929. Type. China: Yunnan, between Djinscha-djiang and Mekong, Handel-Mazzetti 7882 (holotype H). Trichostomum leptotortuosum (C. Müll.) Broth., Nat. Pflanzenfam. I(3): 394. 1902. Barbula leptotortuosa C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 5: 179. 1898. Type. China: Shaanxi (Schen-si), Tui-kio-san, 20 X 1896, P. J. Giraldi 1816. Trichostomum parvulum Broth., Akad. Wiss. Wien Sitzungsber., Math.-Naturwiss. Kl., Abt. 1, 133: 564. 1924. Type. China: Yunnan, Yun-ling, Handel-Mazzetti 3132 (holotype H).