Arenaria atuntziensis C. Y. Wu ex L. H. Zhou var. stenopetala Y. W. Tsui ex L. H. Zhou; A. roseiflora f. albiflora C. Y. Wu; Moehringella roseiflora (Sprague) Neumayer.

Herbs perennial. Stems violet, 10--25 cm, distally with recurved, brown, short hairs and long, glandular hairs. Basal leaves attenuate into a petiole at base; leaf blade saccate, 1--2 cm × 3--5 mm, apex obtuse. Cauline leaves sessile, lanceolate or elliptic, 0.7--1.5 cm × 2--5 mm, midvein raised abaxially, violet, base rounded, margin ciliate from middle to apex, apex obtuse. Flower solitary, terminal. Pedicel recurved pubescent or long capitate glandular. Sepals 5, violet, lanceolate, 5--10 × 2--3 mm, violet glandular hairy abaxially, base cuneate, apex obtuse. Petals 5, pink or white, obovate, ca. 2 × as long as sepals, apex shallowly 2-cleft; lobes very narrow, irregularly 2- or 3-toothed. Stamens 10, shorter to slightly longer than sepals; anthers violet. Ovary ovoid, ca. 1/2 as long as sepals. Styles 2, linear. Fl. Jun--Jul.

* Mountains, alpine meadows, shifting screes, barrens; (2700--) 3300--4100(--4500) m. NW Yunnan.