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Published In: Enumeratio Bryinearum Exoticarum 69. 1888. (Enum. Bryin. Exot.) Name publication detail
 

Project Name Data (Last Modified On 3/10/2009)
Acceptance : Accepted
Project Data     (Last Modified On 4/30/2009)
General Reference:

Illustration & Map     (Last Modified On 4/30/2009)
Illustrations: Oreoweisia laxifolia (Hook. f.) Kindb. (Figs. 1–9.)
Map: Oreoweisia laxifolia (Hook. f.) Kindb. (Distribution in China)

Distribution     (Last Modified On 4/30/2009)
Distribution:
Habitat: on soil and rocks, rarely on rotten wood in forests.
Distribution: China, Himalayas, India, and Japan.

Specimens Examined     (Last Modified On 4/30/2009)
Specimens Examined:
Chinese specimens examined: Guangxi: Xing-an Co., C. Gao & G.-C. Zhang 1703 (IFSBH). Hebei: Xing-long Co., J.-X. Ji 752 (IFSBH). Liaoning: Ben-xi Co., C. Gao & G.-C. Zhang 83400 (IFSBH). Sichuan: Omei Co., Raven et al. 56 (MO); Hui-li Co., Handel-Mazzetti 956, 968 (H). Xizang: Cuo-na Co., S.-K. Chen 5162 (IFSBH, KUN); Ya-dong Co., M. Zang 598 (IFSBH, KUN). Yunnan: Da-li Co., Handel-Mazzetti 6496, 6597 (H); Yang-bi Co., Redfearn et al. 455, 675 (MO).

 

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1. Oreoweisia laxifolia (Hook. f.) Kindb.  疏叶石毛藓 shu-ye shi-mao xian
Enum. Bryin. Exot. 69. 1888. Grimmia laxifolia Hook.f., Icon. Pl. 2: 194B. 1837. Didymodon laxifolius (Hook.f.) Mitt., J. Proc. Linn. Soc., Bot. Suppl. 1: 23. 1859. Syntypes. India: Sikkim, J. D. Hooker 103, 104, 105, 107.
Zygodon schmidii C. Müll., Bot. Zeit. 11: 60. 1853. Oreoweisia schmidii (C. Müll.) Paris, Index Bryol. 868. 1897.
 
Plants soft, rather large, to 5 cm high, yellowish green above, dark green below, not shiny, in dense tufts. Stems erect, often dichotomously branched. Leaves laxly spaced, curled when dry, erect-patent when moist, oblong-lingulate, up to 2.5 mm × 0.6 mm, somewhat sheathing at base, obtuse or blunt at apex; margins plane, irregularly serrulate near the apex; costa narrow, percurrent, with dorsal stereid band; upper cells quadrate to rounded-quadrate, thick-walled, mammillose on both surfaces; basal cells rectangular, ca. 60 µm × 18 µm, pellucid, thin-walled; alar cells not differentiated. Autoicous. Perichaetial leaves similar to upper stem leaves. Setae straight, orange-brown, ca. 10 mm long, twisted when dry; capsules reddish brown, erect, oblong-ovoid to short-cylindric, symmetric, contracted near the mouth, urns ca. 3 mm × 1 mm, exothecial cells rather thin-walled; peristome teeth inserted below the mouth, yellowish, smooth. Spores brownish, 18–20 µm in diameter, warty.
 
 
 
 
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