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FOC | Family List | FOC Vol. 5 | Polygonaceae | Polygonum

60. Polygonum vacciniifolium Wallich ex Meisner in Wallich, Pl. Asiat. Rar. 3: 54. 1832.

乌饭树叶蓼 wu fan shu ye liao

Bistorta vacciniifolia (Wallich ex Meisner) Greene; Persicaria vacciniifolia (Wallich ex Meisner) Ronse Decraene.

Subshrubs densely tufted, 10-20 cm tall, much branched. Bark black-brown, longitudinally exfoliating; branches nearly prostrate; branchlets suberect, dense. Petiole short; leaf blade elliptic, 1-2 × 0.6-1 cm, thinly leathery, midvein prominent abaxially, base narrowly cuneate, margin entire, slightly revolute; ocrea brown, tubular, ca. 1 cm, membranous, veins numerous, large, apex oblique, not ciliate, usually lacerate. Inflorescence terminal, spicate, lax, 4-8 cm, 6-8 mm in diam.; bracts narrowly ovate, membranous, apex acute, each 1- or 2-flowered. Pedicels longer than bracts. Perianth purple-red, 5-parted; tepals narrowly elliptic, 3.5-4.5 mm. Stamens 8, exserted; anthers purple. Styles 3; stigmas capitate. Achenes included in persistent perianth, dull, narrowly ellipsoid, trigonous, 3-4 mm. Fl. Aug-Sep, fr. Sep-Oct.

Thickets on mountain slopes, mountainous rocky crevices; 3000-4200 m. Xizang [Bhutan, India, Kashmir, Nepal, Pakistan, Sikkim].


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