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Published In: Hedwigia 80: 239. pl. 44: f. 6–9. 1941. (Hedwigia) Name publication detailView in Botanicus

Project Name Data (Last Modified On 3/13/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/13/2009)
General Reference:

Illustration & Map     (Last Modified On 3/13/2009)
Related Objects:
Illustrations: Zander 1993 (Pl. 45, figs. 13–15, as Barbula williamsii).

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Map: Hydrogonium williamsii P.C. Chen (Distribution in China)

Distribution     (Last Modified On 3/13/2009)
Habitat: on calcareous rocks or on wet rocks near streams.
Distribution: China and the Philippines.

Specimens Examined     (Last Modified On 3/13/2009)
Specimens Examined:
Chinese specimens examined: Shandong: Tai Shan (Mt.), C. Gao 33949, 33954 (HKAS, IFSBH). Shanxi: Tai-yuan City, Y.-J. Ling 59008 (HKAS). Xizang: Mo-tuo Co., Y.-G. Su 2268 (HKAS); Zhong-ba Co., K.-Y. Lang 7578 (HKAS). Yunnan: De-qin Co., X.-J. Li 81–1841 (HKAS); Lv-chun Co., M. Zang 421 (HKAS); Yuan-yang Co., X.-J. Li 4913 (HKAS); Zhong-dian Co., X.-J. Li 81–1479, 81–1486 (HKAS).


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12. Hydrogonium williamsii P.-C. Chen    钝叶石灰藓 dun-ye shi-hui xian
Hedwigia 80: 239, pl. 44: f. 6–9. 1941. Barbula williamsii (P.-C. Chen) Iwats. & B.-C. Tan, Kalikasan 8: 186. 1979. Type. The Philippines: Luzon, Bagnio, 1500 m, Williams 1673.
Plants small, to 15 mm high, yellowish green, in dense tufts. Stems erect, simple or branched. Leaves contorted when dry, erect-spreading when moist, usually concave, narrowly lanceolate, blunt or rounded-obtuse at the apex; margins entire, plane; costa stout, ending just below the apex; upper leaf cells very small, quadrate to pentagonal, or irregularly rectangular, thick-walled, smooth; basal cells oblong-rectangular, more than 10 times longer than the upper cells. Setae slender, ca. 15 mm long, reddish brown; capsules erect, oblong-elliptic ovoid; peristome teeth linear, twisted.
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