Description from Flora of China
Subshrubs, erect or prostrate, 5-10 cm tall. Stems terete, woody, with semicircular leaf scars, glabrous or young parts adnate-pubescent. Petiole 5-10 mm, glabrous; leaf blade abaxially green with purple, adaxially green, elliptic, 1.5-4 × 0.6-1.5(-2) cm, ± fleshy, abaxially glabrous, adaxially glabrous or white setose along margin, midvein slightly raised abaxially, impressed adaxially, lateral veins 3 pairs, obscure, base cuneate or subrounded, margin entire, apex obtuse or rounded, mucronate. Racemes terminal, 2.5-3 cm, axis of inflorescence pubescent. Flowers numerous, dense. Pedicel ca. 2 mm, glabrous; basal bract 1, persistent, oblong-ovate, ca. 2 mm, apex acuminate, ciliate. Sepals 5, caducous; outer sepals 3, elliptic, ca. 3 mm, glabrous, apex obtuse; inner sepals 2, elliptic-ovate, ca. 7 × 3.5 mm, 5-veined, apex rounded. Petals 3, connate in lower 1/2, purple-red, ca. 9 mm; lateral petals nearly equaling keel, apex rounded; keel apex with deeply 2-lobed lamellate appendages. Stamens 8; filaments ca. 7 mm, lower 5/7 united, forming an open staminal sheath; anthers ovoid. Ovary globose, ca. 1 mm in diam., winged, glabrous; style ca. 7 mm, gradually thickened from base toward apex, curved, apex tubiform, 2-lobed; stigma in lower lobe. Capsule orbicular, ca. 3 mm in diam., base with disk and scars of perianth, winged, apex incised. Seeds not seen. Fl. Apr-Sep, fr. Jun-Oct.
● On rocks in broad-leaved forests; 700-900 m. Guangdong, Guangxi, Hunan.