小花溲疏(原变种) xiao hua sou shu (yuan bian zhong)

Deutzia corymbosa R. Brown ex G. Don var. parviflora (Bunge) C. K. Schneider; D. parviflora var. mongolica Franchet; D. parviflora var. ovatifolia Rehder.

Stellate hairs of leaf blade abaxial midvein with long central rays. Inflorescences many flowered. Petals (3-)4-7.5 mm. Filaments all toothless or inner ones 2-dentate. Fl. Apr-Jun, fr. Aug-Oct.

Mixed forests, mountain slopes, valleys; 1000-1500 m. Gansu, Hebei, Henan, Hubei, Jilin, Liaoning, Nei Mongol, Shaanxi, Shanxi [Korea, Russia].