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Published In: Bericht über die Thätigkeit der St. Gallischen Naturwissenschaftlichen Gesellschaft 1872–73: 97 (Gen. Sp. Musc. 1: 375). 1874. (Ber. Thätigk. St. Gallischen Naturwiss. Ges.) Name publication detail

Project Name Data (Last Modified On 3/16/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/4/2009)
General Reference:

Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Racomitrium himalayanum (Mitt.) A. Jaeger (Figs. 15–24.)
Map: Racomitrium himalayanum (Mitt.) A. Jaeger (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Habitat: on rocks in high mountains; alt. 3400–3700 m.
Distribution: China, Bhutan, India, Nepal, and Sikkim.

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:
Chinese specimens examined: Guizhou: Lei-shan Co., B.-C. Tan 91-729 (FH). Sichuan: Lu-ding Co., Y. Xuan 82-005 (HKAS); Mu-li Co., L.-S. Wang 83-1216 (HKAS); Yan-yuan Co., K.-K. Chen 497 (HKAS). Xizang: Cuo-na Co., Xizang Team 7935 (MO); Lin-zhi Co., K.-Y. Lang 780 (MO), Z.-X. Tan 20(1) (IFSBH); Mo-tuo Co., Y.-G. Su 3008 (HKAS); Ya-dong Co., M. Zang 423 (HKAS). Yunnan: Da-li Co., Redfearn et al. 1410 (MO, SMS); De-qian Co., M. Zang 8476 (HKAS); Li-jiang Co., S.-G. Wu 130 (HKAS); Wei-xi Co., D.-C. Zhang 82-828 (HKAS); Zhong-dian Co., A.-L. Zhang 62-003 (HKAS).

Notes     (Last Modified On 5/4/2009)
general taxon notes:
Racomitrium himalayanum is characterized by its distinctly recurved leaf margins, relatively short, not dentate hyaline hair-points, smooth, elongate-rectangular median leaf cells, and scarcely differentiated alar cells.


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13. Racomitrium himalayanum (Mitt.) Jaeg.   喜马拉雅砂藓   xi-ma la-ya sha xian
Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1872–73: 97 (Gen. Sp. Musc. 1: 375). 1874. Grimmia himalayana Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1: 45. 1859. Syntypes. Sikkim: J. D. Hooker 298, 301, 305, 321, 326. Nepal: Wallich s.n.
Racomitrium dicarpum Broth., Symb. Sin. 4: 47. 1929. Type. China: Yunnan, Doker-la between Mekong and Salwin, 28°15′N, alt. 4225 m, Handel-Mazzetti 8067 (holotype H).


Plants medium-sized, up to 2–4 cm long, yellowish green above, dark brownish below, in loose tufts. Stems ascending, irregularly branched; central strand absent. Leaves imbricately appressed when dry, erect-spreading when moist, narrowly ovate-lanceolate, 2.5–3.3 mm long, somewhat keeled above, with relatively short, not dentate, somewhat decurrent hyaline hair-points, sometimes hair-points reduced; margins distinctly recurved on both sides; costa stout, percurrent; upper and median leaf cells rectangular to elongate-rectangular, 12–36 µm × 5–7 µm, sinuosely thick-walled, smooth, unistratose at margins; basal cells elongate-rectangular, 24–48 µm × 5–7 µm, sinuosely thick-walled, smooth; alar cells scarcely differentiated, orange, with a marginal row of 3–5 larger, straight-walled cells. Perichaetial leaves smaller than stem leaves, ovate-lanceolate, without hyaline hair-points. Setae erect, yellowish brown, 10–15 mm long, twisted when dry; capsules oblong-ovoid to cylindrical, 1.0–1.5 mm long; opercula long-rostrate; annuli developed, with 2 rows of thick-walled cells; peristome teeth linear to linear-lanceolate, divided to the base, densely papillose. Spores small, 11–15 µm in diameter, yellowish green to yellowish brown, minutely papillose.


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