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Polygonum forrestii

Description from Flora of China

Koenigia forrestii (Diels) Mesicek & Soják.

Herbs perennial. Stems creeping, tufted; branches erect, 5-20 cm tall, villous. Petiole 3-5 cm, long pilose; leaf blade nearly orbicular or reniform, 1-4 cm in diam., both surfaces long pilose or nearly glabrous, base cordate, margin densely ciliate, apex obtuse; ocrea laxly tubular, membranous, pilose, oblique. Inflorescence terminal, corymbose-cymose; bracts oblong, thinly membranous. Pedicels longer than bracts, 4-5 mm, glabrous, apex articulate. Perianth white or yellowish, 5(or 4)-parted; tepals obovate, 4-5 mm, unequal. Stamens 6-8; anthers purple. Styles 3, very short; stigmas capitate. Achenes included in persistent perianth, yellow-brown, dull, narrowly ellipsoid, trigonous, narrow at base, 2-3 mm. Fl. Jul-Aug, fr. Aug-Sep. 2n = 14.

One of us (Hong) believes that this taxon would be better treated in the genus Koenigia.

Grassy slopes, alpine meadows; 3500-4800 m. Guizhou, Sichuan, Xizang, Yunnan [Bhutan, ?Kashmir, Myanmar, Nepal, Sikkim].


 

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