5. Anoectangium thomsonii Mitt. 卷叶丛本藓 juan-ye cong-ben xian
J. Proc. Linn. Soc., Bot., Suppl. 1: 31. 1859. Type. Sikkim: T. Thomson 156 (lectotype NY), T. Thomson 153, 199 (syntypes NY); J. D. Hooker 197, 200, 201, 205 (syntypes NY).
Anoectangium crispulum Wilson, Hooker's J. Bot. Kew Gard. Misc. 9: 325. 1857, nom. nud.
Anoectangium fauriei Cardot, Beih. Bot. Centralbl. 19(2): 90. 1905.
Anoectangium kweichowense E.B. Bartram, Ann. Bryol. 8: 9. 1935. Type. China: Guizhou (Kweichow), Hui Hsiang-ping, S.-Y. Cheo 837 (isotype HKAS).
Anoectangium laxum Müll. Hal., Nuovo Giorn. Bot. Ital., n. ser. 5: 187. 1898. Type. China: Shaanxi (Schen-si), Kuan-tou-san, Nov. 1896, P. J. Giraldi s.n.
Anoectangium pulvinatum Mitt., Trans. Linn. Soc. London, Bot., ser. 2, 3: 160. 1891, hom. illeg.
Anoectangium schensianum Müll. Hal., Nuovo Giorn. Bot. Ital., n. ser. 4: 260. 1927. Type. China: Shaanxi (Schen-si), in monte Lao-y-san, 1896, Giraldi s.n.
Anoectangium subpulvinatum Broth., Akad. Wiss. Wien Sitzungsber., Math.-Naturwiss. Kl., Abt. 1, 133: 563. 1924. Type. China: Sichuan, Yeng-yuen Co., Handel-Mazzetti 2626 (holotype H).
Plants fairly small, (3–)6–15 mm high, yellowish green, in dense tufts. Stems erect, simple or rarely forked; in cross section outer cortical cells small, thick-walled, central strand absent. Leaves involute or contorted when dry, oblong-lanceolate to linear-lanceolate, 1.3–1.7 mm × 0.20–0.35 mm, acuminate or acute at the apex; basal cells hardly widened, not constricted above the leaf base; margins plane, more or less carinate, entire; costa percurrent or ending below the apex; upper and median laminal cells rounded to quadrate, 6–14 µm × 6–11 µm, with rounded pluripapillae; basal cells slightly enlarged, rectangular or short-oblong, 12–22 µm × 6–10 µm, narrower and shorter toward the margin, smooth or papillose; abaxial superficial cells of costa above the mid-leaf linear-rectangular. Inner perichaetial leaves broad-ovate, acute at the apex. Setae 6–7 mm long, yellowish brown, more or less twisted; capsules erect, shortly cylindrical, 0.5–0.8 mm long; columella persistent.