泛生链齿藓

Tortula laureri (Schultz.) Lindb., Öfvers. Forh. Kongl. Svenska Vetensk.-Akad. 21: 243. 1864. Campylotortula sinensis Dix. in Yang, Sci. Rep. Natl. Tsing Hua Univ., Sér. B, Biol. Sci. 2: 117. 1936, nom. nud. Desmatodon laureri var. setschwanicus (Broth.) P.-C. Chen, Hedwigia 80: 295. 1941. Tortula laureri var. setschwanicus (Broth.) Zang., Bull. Buffalo Soc. Nat. Sci. 32: 226. 1993. Desmatodon setschwanicus Broth. in Handel-Mazzetti, Symb. Sin. 4: 43, Pl. 1, f. 8. 1929. Type. China: Sichuan, Mu-li Co., Handel-Mazzetti 2468 (holotype H). Tortula arcuata C. Müll. ex Broth., Nat. Pflanzenfam. I(3): 432. 1902, hom. illeg. Barbula arcuata C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 3: 100. 1896, hom. illeg. Type. China: Shaanxi (Schen-si), Kuan-tou-san, VII 1894, Giraldi s.n.

Plants small to medium-sized, (5–)10–20 mm high, green, in dense tufts. Stems erect, simple or branched, radiculose at the base. Leaves contorted or crisped when dry, spreading when moist, oblong-elliptic to ligulate, 4–6 mm x 0.8–1.0 mm, abruptly acuminate at the apex, with a short apiculus; margins revolute in the lower half, plane, serrulate near the apex, bordered by 2–3 rows of linear, thick-walled cells, yellow; costa percurrent; upper cells larger, lax, irregularly hexagonal, thin-walled, densely covered with C-shaped papillae; basal cells rectangular, smooth, hyaline. Setae 2–3 cm long, yellowish red; capsules horizontal to inclined, obovoid-cylindrical, yellowish green to brown.

Type. Europe.

Chinese specimens examined: GUANGDONG: Le-Chang Co., L. Zhang 629 (HKAS). HEBEI: Dong-ling, L.-Q. Yu 42 (PE); Xizo-wu-tai Shan (Mt.), C.-Y. Yang 66, 686 (PE). HUNAN: Da-yong City, D.-K. Li 17913 (HKAS, SHM). SHAANXI: Hu Co., M. Wang 377, 605 (HKAS); western Tai-bai Shan (Mt.), Z.-P. Wei 6345 (HKAS, WUG). SICHUAN: Wen-chuan Co., J.-X. Luo 3525k (PE); Xiang-cheng Co., C.-L. Yang 4471 (HKAS), Sichuan Bot. Exped. Team 4441 (PE). YUNNAN: Bin-chuan Co., M.-K. Cui 1004b (HYUB); Kun-ming City, Koponen 37415 (H, HKAS). ZHEJIANG: Western Tian-mu Shan (Mt.), M. Zang 755 (HKAS).

Habitat: on boulders, soil, or soil over rocks; Distribution: China, Japan, Mongolia, Russia, Europe, North America, and Africa.

Illustrations: C. Gao (ed.) 1996 (Pl. 81, figs. 4–6).