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Published In: Botanical Gazette 14(2): 44–45. 1889. (Bot. Gaz.) 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 3/17/2009)
General Reference:

Illustration & Map     (Last Modified On 3/17/2009)
Related Objects:
Illustrations: J.-X. Li (ed.) 2006 (Pl. 30, figs. 13–16).
Click here for distribution map.
Map: Bryum knowltonii Barnes (Distribution in China)

Distribution     (Last Modified On 3/17/2009)
Habitat: on soil in grasslands; alt. 2500–4900 m.
Distribution: China, most of Asia, Europe, and North America.

Specimens Examined     (Last Modified On 3/17/2009)
Specimens Examined:
Chinese specimens examined: Heilongjiang: Yi-chun City, T.-Y. Ding 830198 (HKAS, IFSBH). Shandong: Mt. Lao, C. Gao 34538 (HKAS, IFSBH). Xizang: Cuo-na Co., Xizang Team 7932 (HKAS).


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22. Bryum knowltonii Barnes   沼生真藓   zhao shen zhen xian
Bot. Gaz. 14: 44. 1889. Ptychostomum knowltonii (Barnes) Spence, Phytologia 87: 21. 2005. Type: Canada.
Plants small, 5–10 mm high, yellowish green to brown, in dense tufts. Stems usually branched, with rhizoids at base. Leaves rather dense in the upper part of stems, erect or variously twisted when dry, spreading when moist, ca. 2.0–2.5 mm long, elliptical to ovate, acute or shortly acuminate, not decurrent at base; margins entire, recurved or slightly recurved at base; costae nearly percurrent or percurrent, reddish below; upper and median leaf cells oblong-rhomboidal, ca. 3–4׃1 (length׃width), thick-walled, becoming narrower near the margins, but borders not differentiated. Synoicous. Setae 12–25 mm long; capsules pendulous, ca. 1.5–2.5 mm long, broadly pyriform; neck short; opercula conic, shortly apiculate; exostome teeth yellowish brown, reddish at base, densely papillose; endostome segments yellowish, perforate; basal membrane ca. 1/2 the height of the teeth; cilia short, 2–3 or rudimentary. Spores 22–24 µm in diameter, minutely papillose.
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