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Published In: Journal of the Hattori Botanical Laboratory 39: 519. 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: Saito 1975 (Fig. 56, 1–14).

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Map: Didymodon acutus (Brid.) K. Saito (Distribution in China)

Distribution     (Last Modified On 3/12/2009)
Habitat: on rocks or thin soil over rocks.
Distribution: China, Japan, Mongolia, Central Asia, Europe, North America, and northern Africa.

Specimens Examined     (Last Modified On 3/12/2009)
Specimens Examined:
Chinese specimens examined: Guangxi: Rong-shui Co., X.-L. He 5506 (PE). Hebei: Wei Co., Xiao Wu-tai Shan, Y.-S. Zhao 46309 (HKAS, PE). Hubei: Sheng-nong-jia, P.-C. Wu 76268b (PE).


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1. Didymodon acutus (Brid.) Saito    尖锐对齿藓 jian-rui dui-chi xian
J. Hattori Bot. Lab. 39. 519. 1975. Barbula acuta (Brid.) Brid., Muscol. Recent. Suppl. 4: 96. 1919. Tortula acuta Brid., Muscol. Recent. Suppl. 1: 265. 1806. Type. Europe.
Didymodon icmadophila auct. non (Schimp. ex C. Müll.) Saito, J. Hattori Bot. Lab. 39: 519. 1975.
Plants small, ca. 5–10 mm high, greenish to brown, in dense tufts. Stems usually erect, simple; central strand well developed. Leaves tightly appressed when dry, erect-spreading when moist, broadly ovate-lanceolate, 1.3–1.7 mm × 0.60–0.65 mm; margins nearly revolute throughout; costa stout, excurrent in a short awn; upper leaf cells rounded or rounded-quadrate, ca. 6–10 µm wide, rather thin-walled, with 2–4 blunt papillae in each cell; basal cells enlarged, oblong-ovate, thin-walled, smooth, hyaline, yellowish green. Setae erect, 6–11 mm long; capsules shortly cylindrical, 1.2–1.6 mm long; annuli developed, narrow, persistent; opercula obliquely conic-rostrate; peristome erect, irregularly bifid, fragile, pale-reddish. Calyptrae cucullate, smooth. Spores 10–15 µm in diameter, pale brownish green, smooth to finely granulate.


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