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!Racomitrium himalayanum (Mitt.) A. Jaeger Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Publicado en: 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
 

Datos del Proyecto Nombre (Last Modified On 3/16/2009)
Aceptación : Accepted
Datos del Proyecto     (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.)
Mapa: Racomitrium himalayanum (Mitt.) A. Jaeger (Distribution in China)

Distribución     (Last Modified On 5/4/2009)
Distribución:
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).

Notas     (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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