Koenigia nummulariifolia (Meisner) Mesicek & Soják; ?Polygonum forrestii Diels var. pumilio Lingelsheim.

Herbs perennial, dwarf. Stems creeping, forming matted tufts; branches 1.5-3 cm, internodes short, rooting at nodes. Petiole ?2-5 mm, glabrous or pilose; leaf blade orbicular or reniform-orbicular, 3-5 mm in diam., abaxially pilose, adaxially glabrous, midvein conspicuous abaxially, base rounded, margin nearly entire, ciliate, apex obtuse; ocrea tubular, membranous, pilose, oblique. Inflorescence terminal, corymbose, dense. Perianth white, 5-parted; tepals elliptic, equal, ca. 1 mm. Stamens usually 5, included; anthers purple-red. Styles 2, very short; stigmas capitate. Achenes yellow-brown, slightly shiny, broadly ovoid, biconvex, ca. 1.5 mm. Fl. Aug-Sep, fr. Sep-Oct.

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

Grassy slopes; 3300-4800 m. Xizang, Yunnan [Bhutan, India, Kashmir, Myanmar, Nepal, Sikkim].