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8. Sparganium yunnanense Y. D. Chen, Acta Phytotax. Sin. 19: 54. 1981.
云南黑三棱 yun nan hei san leng
Stems floating, 1.3-1.5 m, stout. Leaves floating, ca. 1.5 m × 1 cm, flattened, spongy, lower slightly convex on abaxial side. Racemes 20-35 cm, lower part ?curved; male heads 8-10; female heads 3 or 4(-7), sessile or lowest 1 or 2 pedunculate. Male flowers: perianth segments spatulate, 3-3.5 mm; filaments 3-4 mm; anthers linear, ca. 2 mm. Female flowers: perianth segments white, spatulate, 4-5 mm, lobate at apex; ovary fusiform, attenuate toward base; styles ca. 1.5 mm; stigmas oblong to ovate, 1.5-2 mm, lacerate or forked. Fl. and fr. May-Sep.
● About 1500 m. SW Yunnan (Menghai).
Govaerts (2010. World Checklist of Typhaceae. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 16 Feb 2010) treats this as a synonym of Sparganium fallax.
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