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Published In: Bericht über die Thätigkeit der St. Gallischen Naturwissenschaftlichen Gesellschaft 1876–77: 452 (Gen. Sp. Musc. 2: 518). 1878. (Ber. Thätigk. St. Gallischen Naturwiss. Ges.) 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 paleaceum (Mitt.) A. Jaeger (Figs. 1–11.)
Map: Plagiothecium paleaceum (Mitt.) A. Jaeger (Distribution in China)

Distribution     (Last Modified On 5/6/2009)
Distribution:
Habitat: on soil and rocks; alt. 2800–3100 m.
Distribution: China and India.
 

Specimens Examined     (Last Modified On 5/6/2009)
Specimens Examined:
Chinese specimens examined: Shaanxi: Mt. Taibai, M.-X. Zhang 108 (WUK). Sichuan: Mt. Omei, D.-K. Li 15421 (SHM). Xizang: Mo-tuo Co., Y.-G. Su 1468 (MO); Ya-dong Co., M. Zang 288 (HKAS, SHM). Yunnan: Gong-shan Co., M.-Z. Wang 9378a (PE); Yang-bi Co., Redfearn & Y.-G. Su 950 (MO).
 

Notes     (Last Modified On 5/6/2009)
general taxon notes:
Iwatsuki (1991) treated P. rotundifolium as a synonym of P. curvifolium; however, the former distinctly differs from the latter by its more or less julaceous plants, its rounded leaves without secund leaf apices, its shorter leaf cells, and its decurrencies consisting of quadrate to rectangular cells. We agree with Enroth et al. (1992) in placing P. rotundifolium under P. paleaceum.

 

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11. Plagiothecium paleaceum (Mitt.) A. Jaeger   圆叶棉藓   yuan ye mian xian
Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1876–77: 452. 1878. Stereodon paleaceus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 2: 103. 1859. Type: India.
Ortholimnobium borii Dixon, J. Bombay Nat. Hist. Soc. 39: 788. 1. f. 15. 1937.
Plagiothecium rotundifolium D.-K. Li, Acta Phytotax. Sin. 19. 2: 265. 1981. Type: China. Xizang, Yadong, M. Zang 288 (HKAS).
 
Plants slender, soft, green, glossy, in dense mats. Stems prostrate, to 3.0 cm long, irregularly, sparsely branched, often with flagelliform branches. Stem and branch leaves similar, plane, erect-patent, not plicate or undulate; ventral and dorsal leaves laterally appressed with lateral leaves; lateral leaves asymmetric, elliptical, 1.49–1.54 mm × 1.25–1.29 mm, abruptly acuminate; margins plane or slightly incurved, entire; costae short, forked, mostly ending below mid-leaf; median leaf cells narrowly rhomboidal, 80–130 µm × 11–14 µm; basal cells shorter, broader, thin-walled, hyaline; alar regions decurrent, consisting of quadrate to rectangular cells. Dioicous. Inner perichaetial leaves erect, highly sheathing at base; costae absent. Setae ca. 15 mm long, reddish; capsules erect, cylindrical, ca. 2.0 mm long; peristome double; exostome teeth narrowly lanceolate, yellowish, cross-striolate below, papillose above; endostome segments keeled; basal membrane high; cilia absent. Spores not seen.
 
 
 
 


 

 
 
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