Arenaria lateriflora Linnaeus, Sp. Pl. 1: 423. 1753.

Herbs perennial, with rhizomes. Stems erect, 10--20 cm tall, pubescent. Leaves subsessile, elliptic or oblong, 1--2.5 cm × 4--10 mm, ciliate at margin and veins hairy at base, 1-veined, apex obtuse. Flowers solitary or in cymes, axillary. Pedicel 6--11(--15) mm, slender, puberulent. Sepals ovate or elliptic, ca. 2 mm, glabrous, margin scarious, apex obtuse. Petals obovate, ca. 2 × as long as sepals. Stamens shorter than petals. Capsule 3.5--5.5 mm, apex 6-toothed. Seeds black-brown, subreniform, ca. 1 mm; strophiole small. Fl. Jun--Jul, fr. Jul--Aug. 2n = 48.

Woods, forest margins; 800--2300 m. Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Shanxi, Xinjiang [Japan, Kazakhstan, Korea, Mongolia, Russia; SW Asia, Europe].