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Published In: Bericht über die Thätigkeit der St. Gallischen Naturwissenschaftlichen Gesellschaft 1872–73: 102 (Gen. Sp. Musc. 1: 380). 1874. (Ber. Thätigk. St. Gallischen Naturwiss. Ges.) Name publication detail

Project Name Data (Last Modified On 3/13/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/4/2009)
General Reference:

Illustration & Map     (Last Modified On 5/4/2009)
Illustrations: Ptychomitrium dentatum (Mitt.) A. Jaeger (Figs. 1–11.)
Map: Ptychomitrium dentatum (Mitt.) A. Jaeger (Distribution in China)

Distribution     (Last Modified On 5/4/2009)
Habitat: on rocks or thin soil over rocks.
Distribution: China, Korea, and Japan.

Specimens Examined     (Last Modified On 5/4/2009)
Specimens Examined:
Chinese specimens examined: Fujian: Nan-ping Co., C. Gao & Z.-W. Aur 25511 (IFSBH). Hainan: Ling-shui Co., Reese 17928 (MO). Qinghai: Xun-hua, J.-W. Zhang 5554 (PE). Shaanxi: Nan-wu-tai Shan (Mt.), C. Gao et al. 16570 (IFSBH). Sichuan: Ba-kang Co., Allen et al. 6872 (MO); Kang-ding Co., S.-D. Zhao & Z.-F. Fang 1305 (IFSBH); Li Co., Allen et al. 6753 (MO); Mao-wen Co., Redfearn 35560a (as Ptychomitrium mariei, NY, SMS); Song-pan Co., Allen et al. 7159 (MO); between Wen-chuan Co. and Guan Co., Redfearn 35577 (as P. mariei, NY, SMS). Yunnan: Lan-chang-jiang (River), D.-C. Zhang 1 (HKAS).

Notes     (Last Modified On 5/4/2009)
general taxon notes:

Ptychomitrium dentatum differs from P. wilsonii, by having oblong-ovate or broadly lanceolate leaves with narrowly oblong bases, relatively long, oblong-ellipsoid capsules, and bifid, linear-lanceolate peristome teeth.


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1. Ptychomitrium dentatum (Mitt.) Jaeg.    齿边缩叶藓   chi-bian shuo-ye xian
Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1872–73: 102. 1874. Glyphomitirum dentatum Mitt., J. Proc. Linn. Soc., Bot. 8: 149. 1864. Type. Japan: “Nagasaki, on rocks, oldham” (lectotype NY); China: “Sam-sa Bay, Alexander 20” (syntype NY).
Plants medium-sized, 2–3 cm high, green or yellowish green above, blackish green to black below, in loose tufts. Stems erect or ascending, sparsely branched; central strand well developed. Leaves 3.0–4.5 mm long, incurved when dry, spreading when moist, oblong-ovate to broadly lanceolate with an oblong, sometimes sheathing base, somewhat keeled above, broadly acute at the apex; margins plane, strongly toothed above, each tooth consisting of several cells; costa single, strong, ending just below the apex or subpercurrent; upper leaf cells often obscure, rounded-quadrate to subquadrate, 8–10 µm wide, slightly thick-walled; basal cells rectangular to short-rectangular, 26–39 µm × 8–10 µm, somewhat hyaline, thin-walled. Autoicous. Perichaetial leaves similar to upper stem leaves. Setae straight, yellowish brown, ca. 5.0 mm long; capsules erect, oblong-ellipsoid, ca. 2.0 mm long; peristome teeth reddish brown, linear-lanceolate, bifid nearly to the base, densely or finely papillose; annuli undifferentiated; opercula with short, erect beak. Calyptrae mitrate, reaching middle of capsule, longitudinally plicate, lobed at the base. Spores yellowish green, 10–14 µm in diameter, finely papillose.


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