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!Ptychomitrium dentatum (Mitt.) A. Jaeger Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

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)
Distribution:
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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