Description from Flora of China
Syringa pinnatifolia var. alashanensis Ma & S. Q. Zhou.
Shrubs 1-4 m. Branchlets generally 4-angled, together with petiole, rachis, pedicel, and calyx glabrous. Leaves pinnately compound; petiole 0.5-1.5 cm; leaflets 7-11(-13), opposite or nearly so, sessile; leaflet blade ovate-lanceolate to ovate, 0.5-3 cm × 3-13 mm, glabrous or adaxially sparsely pubescent, base cuneate to subrounded and usually oblique, apex acute to acuminate or obtuse. Panicles lateral, slightly nodding, 2-6.5 × 2-5 cm. Pedicel 2-5 mm. Calyx ca. 2.5 mm. Corolla white or light red, somewhat tinged with lilac, 1-1.6 cm; tube slightly funnelform, 0.8-1.2 cm; lobes ovate or oblong. Anthers yellow, inserted to 4 mm from mouth of corolla tube. Capsule oblong, 1-1.3 cm, smooth. Fl. May-Jun, fr. Aug-Sep. 2n = 46*, 48.
* Thickets on slopes; 2600-3100 m. Gansu, Nei Mongol, Ningxia, E Qinghai, S Shaanxi, W Sichuan.