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!Didymodon nigrescens (Mitt.) K. Saito 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
 

Published In: Journal of the Hattori Botanical Laboratory 39: 510. 1975. (J. Hattori Bot. Lab.) Name publication detail
 

Project Name Data (Last Modified On 3/12/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/12/2009)
General Reference:

Illustration & Map     (Last Modified On 3/12/2009)
Related Objects:
Illustrations: C. Gao (ed.) 1996 (Pl. 63, figs. 5–8, as Barbula nigrescens).
Map: Didymodon nigrescens (Mitt.) K. Saito (Distribution in China)

Distribution     (Last Modified On 3/12/2009)
Distribution:
Habitat: on calcareous rocks or cliffs in montane forests or subalpine grasslands.
Distribution: China, India, Japan, and North America.
 

Specimens Examined     (Last Modified On 3/12/2009)
Specimens Examined:
Chinese specimens examined: Jilin: Chang-bai Shan (Mt.), C. Gao 1069, 1194 (HKAS, IFSBH). Jiangsu: Nan-jing City, M. Zang 197 (HKAS). Jiangxi: Jing-gang Shan (Mt.), D.-K. Li 16927 (HKAS, SHM). Nei Mongol: He-lan Shan (Mt.), Z.-G. Tong 2179 (PE). Shaanxi: Hu Co., M. Wang 502, 595a (HKAS); eastern Tai-bai Shan (Mt.), Z.-C. Zhu 6 (HKAS); western Tai-bai Shan (Mt.), Z.-P. Wei 6300 (HKAS, WUG). Shanghai: Song-jiang Co., D.-K. Li 1329 (HKAS, SHM). Sichuan: Ba-tang Co., X.-J. Li 81–2999 (HKAS); De-rong Co., X.-J. Li 81–2841 (HKAS); Lu-ding Co., Y. Xuan 17833 (HKAS); Ma-er-kang Co., S. He 31254 (MO); Mu-li Co., K.-K. Chen 547 (HKAS); Wen-chuan Co., J.-X. Luo 3680 (PE). Taiwan: Tai-zhong Co., Koponen 17985 (H). Xinjiang: Begeda Shan (Mt.), J.-C. Zhao 2275 (HKAS); Urumqi Co., S. He 951086 (MO). Xizang: Long-zi Co., M. Zang 909, 922 (HKAS); Shuang-hu Co., K.-Y. Lang 1049 (HKAS); Ya-dong Co., M. Zang 981 (HKAS); Zhu-mu-long-ma-feng (Mt. Everest), X.-G. Wang 49 (MO, PE). Yunnan: An-ning Co., X.-J. Li 81–87 (HKAS); Bai-ma Snow Mt., X.-J. Li 81–2075 (HKAS); Bin-chuan Co., M.-K. Cui 821e (HYUB); De-qin Co., X.-J. Li 81–2075 (HKAS); Jade Dragon Snow Mountain, Croat 77628 (MO); Li-jiang Co., X.-J. Li 85305 (HKAS), W.-X. Xu 914 (HYUB). Zhejiang: Long-tang Shan (Mt.), R.-L. Hu 62 (HKAS, HSNU).

 

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11. Didymodon nigrescens (Mitt.) Saito    黑对齿藓 hei dui-chi xian
J. Hattori Bot. Lab. 39: 510. 1975. Barbula nigrescens Mitt., J. Proc. Linn. Soc., Bot. Suppl. 1: 36. 1859. Type. Sikkim: J. D. Hooker 169 (NY).
Andreaea yuennanenis Broth., Symb. Sin. 4: 9. 1929. Type. China: Yunnan, Zhong-dian (Chungtien) Co., Handel-Mazzetti 6952 (holotype H).
Barbula subrivicola P.-C. Chen, Hedwigia 80: 213. 35 f. 7–13. 1941. Type. China: Sichuan (Setschwan), Yan-yuan (Yenyuen) Co., Handel-Mazzetti 5538 (holotype H).
Barbula subrivicola var. densifolia P.-C. Chen, Hedwigia 80: 215. 1941. Type. China: Sichuan (Setschwan), between Yalung and Tschahung, Handel-Mazzetti 2669 (holotype H).
 
Plants small to medium-sized, 10–20 mm high, dark green to dark reddish brown, in cushions or dense tufts. Stems erect, often branched; central strand absent. Leaves appressed or somewhat involute when dry, erect-spreading when moist, broadly ovate- to shortly ovate-lanceolate, 1.3–1.6 mm × 0.3–0.5 mm, narrowly obtuse to blunt at the apex; margins entire, distinctly revolute; costa stout, dark brown, percurrent or ending just below the apex; upper leaf cells rounded hexagonal, 6–12 µm × 8–12 µm, thick-walled, with blunt large papillae; basal cells rectangular, 12–24 µm × 8–14 µm, thick-walled, smooth or sometimes with single papilla. Dioicous. Perichaetial leaves larger than stem leaves. Setae slender, ca. 7 mm long, dark reddish; capsules erect, blackish red, cylindrical, ca. 2.5 mm long; opercula conic-rostrate with a short beak.
 
 
 


 

 
 
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