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Published In: Bryologia Europaea 5: 190 (fasc. 48. Monogr. 12). 1851. (Bryol. Eur.) Name publication detail

Project Name Data (Last Modified On 4/1/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/6/2009)
General Reference:

Illustration & Map     (Last Modified On 5/6/2009)
Illustrations: Plagiothecium denticulatum (Hedw.) Schimp. (Figs. 1–10.)
Map: Plagiothecium denticulatum (Hedw.) Schimp. (Distribution in China)

Distribution     (Last Modified On 5/6/2009)
Habitat: on soil, rocks, and rotten wood; alt. 1500–3090 m.
Distribution: China, Japan, Russia, Europe, and North America.

Specimens Examined     (Last Modified On 5/6/2009)
Specimens Examined:
Chinese specimens examined: Jiangxi: Mt. Lushan, P.-C. Chen et al. 203 (PE). Jilin: Mt. Changbai, C. Gao 22510 (MO), D.-K. Li 9831, 10111, 10145 (all in SHM), P.-J. Lin 2156, 2210 (both in IBSC); Wang-qing Co., C. Gao & G.-C. Zhang 8603 (IFSBH). Nei Mongol: Da Xing An Ling (Mt.), P.-C. Chen & C. Gao 814 (IFSBH). Shaanxi: Mt. Taibai, Z.-P. Wei 5797, 5818 (both in WUK); Hu Co., Z.-P. Wei 4493 (WUK). Sichuan: Mt. Omei, Redfearn 34774 (MO). Xizang: Mt. Everest, Exped. Team 73 (PE); Ya-dong Co., M. Zang 396 (HKAS).

Notes     (Last Modified On 5/6/2009)
general taxon notes:
Plagiothecium denticulatum var. denticulatum is characterized by the strongly asymmetric leaves with broad decurrencies consisting of shortly rectangular or rounded-quadrate, inflated cells.


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3. Plagiothecium denticulatum (Hedw.) Schimp. in B.S.G.   棉藓   mian xian
Bryol. Eur. 5: 190. 1851. Stereodon denticulatus (Hedw.) Mitt., J. Proc. Linn. Soc., Bot. 7: 158. 1863. Hypnum denticulatum Hedw., Sp. Musc. Frond. 237. 1801. Type: Germany.
Plagiothecium denticulatum fo. undulatum (R. Ruthe ex Geh.) C. E. O. Jensen, Skand. Bladmossfl. 494. 1939. Plagiothecium denticulatum var. undulatum R. Ruthe ex Geh., Rev. Bryol. 4: 42. 1877.
3a. Plagiothecium denticulatum var. denticulatum   棉藓原变种   mian xian yuan bian zhong
Plants soft, rather large, green to yellowish green, sometimes dark green, often glossy, in loose or dense mats. Stems prostrate or ascending, usually longer than 5 cm, complanate, irregularly branched, densely foliate;
stem elliptical in cross section, ca. 0.3–0.5 mm in diameter; central strand not clearly differentiated. All leaves complanate, often slightly concave, mostly asymmetric, shortly ovate-lanceolate, 1.0–2.0 mm × 0.6–0.9 mm, gradually or abruptly narrowed to a short, often acute apex; margins entire below, serrulate near apex, sometimes reflexed on one side below; costae slender, short, double or forked, rarely reaching to the mid-leaf; median leaf cells linear-rhomboidal, 80–120 µm × 10–15 µm; apical cells short; basal cells broader, short, ca. 25 µm long, more or less porose; alar regions broadly decurrent, consisting of shortly rectangular or rounded-quadrate, inflated cells. Brood bodies often present in leaf axils. Autoicous or dioicous. Perichaetial leaves shortly ovate-lanceolate, abruptly narrowed to a short apex. Setae 12–22 mm long, reddish brown; capsules inclined to horizontal, curved, shrunken when dry, ca. 2.0 mm long with operculum; opercula conic-rostrate with a short beak; annuli well developed; stomata at neck; peristome typical for the genus; cilia 2, nodulose. Spores 10–13 µm in diameter, minutely papillose or nearly smooth.

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There are two varieties of this species found in China.

3a. Plagiothecium denticulatum var. denticulatum  

3b. Plagiothecium denticulatum var. obtusifolium (Turner) Moore



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