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Published In: Species Muscorum Frondosorum 183, pl. 42, f. 8–12. 1801. (Sp. Musc. Frond.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/17/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/4/2009)
General Reference:

Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Bryum dichotomum Hedw. (Figs. 13–19.)
Map: Bryum dichotomum Hedw. (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Habitat: on soil walls, thin soil over rocks in bright places; alt. 1000–2700 m.
Distribution: China, India, Malaysia, Europe, South, Central and North America, Africa, and New Zealand.

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:


Chinese specimens examined: Anhui: She Co., D.-K. Li 2425 (HKAS, SHM). Gansu: Wu-du Co., M.-X. Zhang & D.-Q. Lu 955 (HKAS, WUG). Hainan: Le-dong Co., Reese 17770 (MO). Henan: Nie-xiang Co., J.-X. Luo 160 (MO). Jiangsu: Lianyun Harbor, P.-P. Lin & Q. Wang 481 (HKAS, NAS); Nanjing City, M. Zang 55-05 (HKAS); Su-zhou City, P.-P. Lin & Q. Wang 2466 (HKAS, NAS). Nei Mongol: Balin You-qi, X.-L. Bai 206 (HIMC). Shaanxi: Hu Co., M.-X. Zhang 2824 (HKAS, WUG). Shandong: Mt. Tai, C. Gao 34104 (HKAS, IFSBH). Xinjiang: Ürumqi City, R.-L. Zhu 93515 (HKAS, HSNU); Wu-su Co., Z.-X. Chen 1339 (MO). Xizang: Ali Co., J.-T. Jin 8 (HKAS); Cha-yu Co., S.-G. Wu 1117 (HKAS). Yunnan: Da-li Co., X.-Y. Jia 910242 (MO); Kunming City, D.-C. Zhang 94-1 (HKAS); Li-jiang Co., Croat 77674 (MO), W.-X. Xu 843 (HKAS, YUKU); Qiu-bei Co., X.-J. Li 250 (HKAS); Zhong-dian Co., D.-C. Zhang 171 (HKAS).


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17. Bryum dichotomum Hedw.   双色真藓   shuang se zhen xian
Sp. Musc. Frond. 183. 1801. Mnium dichotomum (Hedw.) P. de Beauv., Prodr. Aethéogam. 74. 1805. Type: New Zealand.
Bryum bicolor Dicks., Fasc. Pl. Crypt. Brit. 4: 16. 1801. Argyrobryum bicolor (Dicks.) Kindb., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 7(9): 79. 1883.
Bryum sasaokae Broth. in Sasaoka, Bot. Mag. (Tokyo) 35: 68. 1921, nom. nud.
Plants small, ca. 5 mm high, green to yellowish green, in loose tufts. Stems branched. Leaves appressed when dry, erect-spreading when moist, oblong- to ovate-lanceolate, acuminate, cucullate above, not decurrent at base; margins plane, entire or serrulate above, slightly recurved below; costae shortly excurrent; median leaf cells rectangular or narrowly hexagonal, 23–50 µm × 10–17 µm, slightly thick-walled, cells narrower at margins, but borders not clearly differentiated; basal cells rectangular to nearly quadrate. Dioicous. Perichaetial leaves linear-lanceolate. Setae ca. 20 mm long; capsules pendulous, ellipsoidal, reddish brown; neck slightly expanded, shrunk when dry; exostome teeth minutely papillose, brownish below; endostome segments as long as the teeth, widely perforate; cilia 1–3, nearly as long as the segments, appendiculate. Spores 9–12 µm in diameter, roughened.


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