Description from Flora of China
Philadelphus pekinensis Ruprecht var. brachybotrys Koehne, Mitt. Deutsch. Dendrol. Ges. 13: 84. 1904.
Shrubs 2-3 m tall. Branchlets of previous year brownish gray, those of current year villous, glabrescent. Petiole 5-8 mm; leaf blade ovate or ovate-oblong, 2-6 × 1-3 cm, abaxially villous along veins, adaxially strigose, veins 3-5, basifugal, base broadly cuneate or rounded, margin sparsely serrate or subentire, apex acute. Racemes 3-5-flowered; rachis 2-2.5(-4) cm, sparsely villous; pedicels 3-8 mm, glabrous. Calyx yellowish green when dry; tube glabrous; lobes ovate, 4-6 × 3-4 mm, apex acute. Corolla discoid; petals white, broadly elliptic or broadly obovate, 1-1.5 × 1-1.4 cm, veined. Stamens 32-42, longest ones ca. 8 mm. Disc and style glabrous. Style slightly divided at apex, slender, subequaling stamens; stigmas mallet-shaped, ca. 1.5 mm, shorter than anthers. Capsule ellipsoid, 7-10 × 5-7 mm. Seeds 3-4 mm, shortly tailed; tail 1.5-2 mm. Fl. Apr-Jul, fr. Aug-Sep.
This species is cultivated as an ornamental.
* Thickets; 200-400 m. ?Fujian, Jiangsu, Jiangxi, Zhejiang.