Deutzia dumicola W. W. Smith; D. setosa Zaikonnikova.

Shrubs ca. 2 m tall. Flowering branchlets brown, 1-2(-3) cm, 2-4-leaved; sterile branchlets to 20 cm, 14-16-leaved; all branchlets densely stellate hairy, hairs with papilliform base. Petiole 1-3 mm; leaf blade ovate, broadly so, or elliptic-ovate, 1.5-2.5 × 0.8-1.8 cm, papery, abaxially densely 5-8(-10)-rayed stellate hairy, adaxially sparsely 4-6(or 7)-rayed stellate hairy, veins in 3 or 4 pairs, base rounded or broadly cuneate, margin serrulate, apex obtuse to acute. Cymes 1-2(-3) × ca. 2 cm, (1-)3-5(-11)-flowered; pedicels 3-5 mm. Calyx tube ca. 3 × 3 mm, densely 8-10-rayed stellate hairy; lobes ovate or oblong, ca. 1.5 × 1 mm. Petals induplicate, white, obovate-elliptic, 6-7 × ca. 3 mm. Outer stamens ca. 3.5 mm; filaments 2-dentate at apex, teeth ± level with anthers. Inner stamens ca. 3 cm; filaments acute or irregularly 2-lobed at apex; anthers borne at middle of filaments abaxially, stalked. Styles 3(or 4), ca. 2 mm. Capsule hemispheric, 3-4 mm in diam., with persistent, erect calyx lobes. Fl. May, fr. Jul-Aug.

* Thickets, mountain slopes; 500-2000 m. Guizhou, Sichuan, Yunnan.