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Moss China | Family List | Moss China V. 1 | Sphagnaceae | Sphagnum

7. Sphagnum cuspidatulum C. Müll., Linnaea. 38: 549. 1874.


Sphagnum rufulum C. Müll., Linnaea 38: 549. 1874.

Plants stout, robust, whitish green tinged with brownish, in dense tufts, shiny when dry. Stem cortex in 2–3 layers, hyaline cells narrow, thin-walled, without fibrils; central cylinder not clearly differentiated. Stem leaves 0.7–1.6 mm × 0.5–0.9 mm, oblong-ligulate or triangular-ligulate, sometimes the basal width wider than length, narrowly obtuse to acute, at times lacerated at the apex, borders narrow, evenly differentiated; hyaline cells divided, rather short and broad, without fibrils and pores, occasionally with one or two large, central pores on the ventral surface. Branches in fascicles of 4–6, with 2–3 spreading, often slender and curved at the apex. Branch leaves usually in 5 rows, 0.8–1.3 mm × 0.3–0.6 mm, ovate-lanceolate, gradually narrowed to a chanelled apex, margins involute, often undulate when dry; hyaline cells densely fibrillose, with numerous large pores at the corners on the ventral surface, with small, ringed pores at the cell angles on the dorsal surface, the inner walls adjacent to green cells smooth; the green cells in cross section triangular, exposed on the dorsal surface. Dioicous. Sporophytes not seen.

Type. India: Khasia, Hooker & Thomson 1284.

Chinese specimens examined: HEILONGJIANG: Da Xing An Ling (Greater Khingan Mt.), C. Gao 12772, 12827 (IFSBH, KUN); Xiao Xing An Ling (Lesser Khingan Mt.), C. Gao 150 (c) (IFSBH, KUN, MO). SICHUAN: E-bian Co., S.-E. Liu 1403 (KUN). XIZANG: Cha-yu Co., S.-G. Wu 1089(b) (KUN, MO); Mo-tou Co., S.-K. Chen 4823 (KUN, MO), S.-G. Wu 5185 (KUN); Ya-dong Co., W.-H. Li 70-1053 (KUN). YUNNAN: Bi-jiang Co., M. Zang 5464 (KUN), 5971 (KUN, MO); Da-li Co., S.-E. Liu 22346 (KUN, PE); Dulongjiang (river), M. Zang 421 (KUN), 817 (KUN, MO); Gong-shan Co., Q.-W. Wang 33722 (KUN, PE), A.-L. Zhang 27(b) (KUN); Jing-dong Co., W.-X. Xu 116 (KUN); Teng-chong Co., H.-T. Cui 27 (KUN).

Habitat: on shaded ground of coniferous forests or wet humus under Rhododendron in high mountains between 2500 and 3800 m; Distribution: China, Nepal, India, Myanmar, Thailand, Indonesia, Malaysia, and the Philippines.

The shiny plants of this species are similar to those of Sphagnum sericeum C. Müll., but they differ by having densely fibrillose branch leaves with small, ringed pores at the corners on the dorsal surface and by oblong-ligulate stem leaves with a very broad base.

Illustrations: Pl. 2, figs. 1–10.


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