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Published In: Acta Societatis pro Fauna et Flora Fennica 18(3): 5, 13. 1899. (Acta Soc. Fauna Fl. Fenn.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/4/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/6/2009)
General Reference:

Illustration & Map     (Last Modified On 3/6/2009)
Related Objects:


Illustrations: C. Gao (ed.) 1994 (Pl. 6, figs. 1–9).

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Map: Sphagnum jensenii H. Lindb. (Distribution in China)

Distribution     (Last Modified On 3/6/2009)


Habitat: in peatland under coniferous forests or on wet rocks near streams.
Disribution. China, Japan, Central Asia, Russian Far East, Europe, and North America.

Specimens Examined     (Last Modified On 3/6/2009)
Specimens Examined:


Chinese specimens examined: Heilongjiang: Hong Xing, H.-F. Xie 5, 18 (KUN); Shuangzihe, C. Gao 146 (IFSBH, KUN); Wu Ying, Y.-C. Zhu 6317 (KUN, MO); Xiao Xing An Ling (Lesser Khingan Mt.), P.-C. Chen & C. Gao 149 (IFSBH, MO); Yichun City, S.-E. Liu 7940 (IFSBH, MO). Jilin: An-tu Co., T. Koponen 36946 (IFSBH, MO); Changbai Shan (Mt.), C. Gao 7337 (IFSBH, KUN), S.-E. Liu 1772 (KUN). Liaoning: Changbai Shan (Mt.), K.-C. Lang 1, 47 (KUN, PE). Nei Mongol: Wufeng Shan (Mt.), C. Gao 800 (IFSBH, KUN). Sichuan: Xiao-jing Co., J.-S. Zhao 363 (KUN). Yunnan: Gong-shan Co., M. Zang 572 (KUN, MO).

Notes     (Last Modified On 3/6/2009)
general taxon notes:


This species is characterized by having slender, brownish plants with small stem leaves and elongate branch leaves (twice as long as stem leaves), and by having linear-rhomboidal hyaline cells of branch leaves with commissural pores on both surfaces.


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16. Sphagnum jensenii H. Lindb.   垂枝泥炭藓 chui-zhi ni-tan xian
Acta Soc. Fauna Fl. Fenn. 18(3): 13. 1899. Type. Russia (formerly Finland).
Plants rather stout, 10–15 cm high, whitish green, capitula often brown, in compact tufts. Stem cortex in 1–2 layers, hyaline cells relatively thick-walled, poorly differentiated from inner cortical layers (4–5 layers) and central cylinder; central cylinder yellowish. Stem leaves 0.8–1.0 mm long, triangular to triangular-ligulate, nearly as long as wide, rounded truncate, dentate at the apex; borders narrow above, slightly widened below; hyaline cells linear-rhomboidal, rarely divided, without fibrils and pores, or rarely with fibrils and pseudopores on both surfaces in the upper cells. Branches in fascicles of 4, with 2 spreading, ca. 1.5–2.0 cm long. Branch leaves 2.2–2.4 mm × 0.5–0.9 mm, imbricate, sometimes secund, narrowly ovate-lanceolate, twice as long as stem leaves, gradually narrowed to a blunt and dentate apex; margins bordered by 2–3 rows of linear cells, entire, involute; hyaline cells linear-rhomboidal, densely fibrillose, with medium-sized, ringed pores on the ventral surface, with small, rounded, unringed pores in commissural rows on the dorsal surface; green cells in cross section triangular, exposed on the dorsal surface, enclosed by convex hyaline cells on the ventral surface. Dioicous; antheridial branches brownish. Perichaetial leaves ovate, broadly bordered. Spores pale yellowish, smooth, ca. 30 µm in diameter.


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