10. Sphagnum falcatulum Besch. 长叶泥炭藓 chang-ye ni-tan xian
Bull. Soc. Bot. France 32: LXVII. 1885. Type. Southern Hemisphere.
Sphagnum lanceolatum Warnst., Hedwigia 29: 219. Pl. 8, f. 7–9; Pl. 10, f. 4–5. 1890.
Plants slender, whitish green tinged with brownish color, in loose tufts. Stem cortex in 3 layers, hyaline cells moderately thick-walled; central cylinder yellowish. Stem leaves ca. 1.6 mm × 0.6 mm, ovate-triangular, rounded-obtuse, borders narrow above, clearly widened below, ca. 1/4 leaf width at base; hyaline cells narrow- to linear-rhomboidal, densely fibrillose with pores, basal cells without fibrils. Branches in fascicles of 4, with 2 spreading. Branch leaves 1.3–1.7 mm × ca. 0.6 mm, narrowly ovate-lanceolate, gradually narrowed to a chanelled, blunt and dentate apex, borders narrow, undulate when dry; hyaline cells oblong- to linear-rhomboidal, fibrillose, with a few rather large pores on the ventral surface, with small pores at the corners in the upper cells and more pores in the lower cells on the dorsal surface, the inner walls adjacent to green cells smooth; the green cells in cross section ovate-triangular, exposed on the dorsal surface. Dioicous. Perichaetial leaves large, broadly ovate at base, gradually narrowed to lanceolate above, cucullate at the apex; hyaline cells without fibrils. Sporophytes not seen.