Description from Flora of China
Shrubs deciduous, 2-3 m tall. Young branchlets yellow-brown, puberulous; old ones purplish brown, glabrous, dotlike lenticellate. Leaves on long branches of current year larger and sparse; leaves on short branches of previous year smaller and clustered, petioles and stipules puberulous when young; stipules deciduous, narrowly triangular-lanceolate, subequaling petioles; petiole very short, 2-5 mm; leaf blade yellow-green, rhombic-elliptic to obovate-elliptic, 1.5-6.5 × 0.6-2.5 cm, membranous, base cuneate, margin serrulate, apex acute to shortly acuminate. Flowers 1-3 in cymes, axillary in long branches; pedicels 1-1.5 cm, slender, hairy, with 2 bracteoles less than 1 mm at middle or below. Sepals 5, yellow-green, 4.5-6 × 2-5.5 mm, imbricate; outer 3 suborbicular, densely veined, apex apiculate; inner 2 elliptic, inconspicuously veined, hairy abaxially, margin ciliate. Petals 5, white, brownish when dry, narrowly lanceolate, 9-11 × 1.5-2 mm, hairy above middle abaxially, margin ciliate, reflexed after anthesis. Stamens yellowish white, ca. 9 mm; filaments linear, 2.5-3.5 mm; anthers linear, equaling or slightly exceeding filaments, lanate at base adaxially, thecae acuminate at apex, barbate, appendages at top of connectives narrowly triangular, less than 1 mm. Ovary narrowly globose, 3-5-angled; styles straight or curved, slender. Seeds (immature) brown, orbicular-reniform, compressed-flat, smooth, not nitid. Fl. Jun-Jul, fr. unknown.
● Thickets; ca. 1300 m. SW Sichuan (Jinyang).