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Moss China | Family List | Moss China V. 1 | Ditrichaceae | Distichium

3. Distichium capillaceum (Hedw.) Bruch & Schimp. in B. S. G., Bryol. Eur. 2: 156 (fasc. 29–30, Mon. 4). 1846; Cynontodium capillaceum Hedw., Sp. Musc. Frond. 57. 1801.


? Distichium brevifolium C. Müll., Nuovo Giorn. Bot. Ital., n.s. 3: 91. 1896. Syn. nov. Type. China: Xizang (Tibet), J. Thomson 32 (holotype B, probably destroyed). Distichium papillosum C. Müll., Nuovo Giorn. Bot. Ital., n.s. 3: 90. 1896. ? Distichium trachyphyllum C. Müll., Nuovo Giorn. Bot. Ital., n.s. 3: 90. 1896. Type. China: Xizang (Tibet), J. Thomson 33 (holotype B, probably destroyed).

Plants slender, small to medium-sized, 2–8 cm high, bright green or yellowish green, shiny, in dense tufts. Stems erect, rarely branched, radiculose below. Leaves crowded, distichous, 3–5 mm long, abruptly narrowed from an erect, oblong-lanceolate, sheathing base to a long, setaceous apex, with acumina about 1–3 times as long as the sheathing base; margins plane, smooth at the sheathing base, papillose in the subula; costa stout, almost filling the entire subula; upper leaf cells irregularly hexagonal, 5–12 µm × 4–5 µm, moderately thick-walled; lower and basal cells becoming elongate, linear-rectangular, 40–70 µm × 2.5–5.0 µm, rather thin-walled. Autoicous or dioicous. Perichaetial leaves similar to the upper stem leaves. Setae straight, reddish brown, 1.0–1.5 cm long; capsules erect, symmetric, oblong-ovoid to cylindric, 1.4–2.1 mm × 0.4–0.6 mm; opercula shortly conic-rostrate; annuli differentiated, in 1–2 rows of large, thick-walled cells; peristome teeth short-lanceolate, 0.10–0.15 mm long, divided nearly to the base, reddish brown or pale yellow, papillose above, obliquely striolate below. Spores 13–24 µm in diameter, yellowish brown, coarsely papillose.

Syntypes. Germany, Sweden.

Chinese specimens examined: GANSU: Baiyangshu, J.-M. Liu 10436 (IFSBH); Qilian Shan (Mt.), Z.-X. Tan 1982.6 (IFSBH); Yu-zhong Co., Huanghe Team 3147 (IFSBH). HEBEI: Wei-xian Co., C. Gao 30657 (IFSBH). HEILONGJIANG: Wudalianchi, C. Gao et al. 13362 (IFSBH). JILIN: Changbai Shan (Mt.), C. Gao 22278 (IFSBH). NEI MONGOL: Da Xing An Ling (Greater Khingan Mt.), C. Gao 12919 (IFSBH). QINGHAI: Xing-hai Co., F.-G. Lu 040 (PE). SHAANXI: Hua Shan (Mt.), P.-C. Chen 711 (IFSBH); Taibai Shan (Mt.), S.-E. Liu 1264 (IFSBH), Z.-P. Wei 6253 (IFSBH), M.-X. Zhang 98 (IFSBH). SHANXI: Guandi Shan (Mt.), Y.-H. Lin 82-7-3 (IFSBH); Ning-wu Co., C. Gao 30898 (IFSBH). SICHUAN: Ba-tang Co., S. He 31432 (MO, PE); Dao-cheng Co., S. He 31663, 31831 (MO, PE); Ruo-er-gai Co., S. He 30674 (MO, PE). XINJIANG: Tian Shan (Mt.), C.-F. Zhao 2305 (IFSBH). XIZANG: Bo-mi Co., Y.-G. Su 848a (KUN); Chang-du Pref., M. Zang 5307a (KUN); Cuo-na Co., M. Zang 1658 (IFSBH, KUN); Ji-long Co., S.-K. Chen 229 (KUN); Lin-zhi Co., M.-Z. Zhang 0003 (KUN); Mi-lin Co., Y.-G. Su 5095 (KUN); Mo-tuo Co., Y.-G. Su 893a (KUN); Nielamu, S.-K. Chen 92, 94 (IFSBH, KUN); Ya-dong Co., M. Zang 792 (IFSBH, KUN). YUNNAN: Baimaxie Shan (Mt.), X.-J. Li 81-2004 (KUN); De-qin Co., M. Zang 7834 (KUN); Kunming City, L.-S. Wang 81-8524 (KUN); Li-jiang Co., W.-X. Xu 0493 (KUN); Zhong-dian Co., Y.-K. Yang 021 (KUN).

Habitat: on calcareous soil or rocks, or on humic and sandy soil; Distribution: nearly worldwide.

Illustrations: C. Gao 1994 (Pl. 40, figs. 1–10).


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