Plants perennial, glabrous. Roots fibrous. Caudex branched, ascending, slender, 3-6 cm, with sterile lateral branches. Basal leaves opposite, oblanceolate to oblong, 7-9 × 1.5-3 mm, apex obtuse. Flowering stems terminal, erect, 7-10 cm; stem leaves few, alternate or opposite, orbicular, orbicular-obovate, or orbicular-rhomboid, 0.9-1.2 × 0.9-1.2 cm, apex acute and mucronate. Inflorescences corymbiform, lax, 1.2-2.5 × 2.5-3.5 cm; bracts few, linear-oblong, apex obtuse; pedicels purple, longer than flowers. Sepals linear-lanceolate, 2.5-4 × 0.8-1 mm, apex obtuse. Petals reddish purple, ovate-triangular, apex acute. Filaments narrowly triangular, 1.1-1.3 mm. Nectar scales nearly quadrate. Carpels erect. Styles short. Seeds oblong-ovoid. Fl. May-Sep.