43. Deutzia calycosa Rehder in Sargent, Pl. Wilson. 1: 149. 1912.
大萼溲疏 da e sou shu
Shrubs ca. 2 m tall. Flowering branchlets purplish brown, 5-7.5 cm, 2-4-leaved. Petiole 3-5 mm; leaf blade abaxially grayish green or gray, adaxially greenish, ovate-lanceolate, ovate-oblong, ovate, or broadly ovate, 1.5-8(-10) × 0.8-3.5(-4.5) cm, leathery, papery, or thinly papery, abaxially sparsely 7-10(-12)-rayed stellate hairy, adaxially sparsely 4-6-rayed stellate hairy, hairs sometimes with central rays on both surfaces, veins in 5 or 6 pairs, base rounded or broadly cuneate, margin sparsely serrate or densely serrulate, apex acuminate. Corymbose cymes aggregate or spreading, 3-4 × 4-5 cm, 9-12-flowered; peduncle elongate and slender, sometimes obscure; pedicels 0.5-1.5(-2) cm. Calyx tube 3-3.5 × 3.5-4 mm, densely 8-10-rayed stellate hairy; lobes lanceolate or oblong-lanceolate, 5-8 × ca. 1.5 mm, membranous. Petals induplicate, white or pink, ovate-oblong, 0.8-1.5 × 0.4-1.1 cm. Outer stamens 6-8 mm; filaments 2-dentate at apex, teeth spreading, ± level with anthers. Inner stamens shorter than outer ones; filaments obtuse, acuminate, or 2-lobed, at apex; anthers borne near middle of filaments abaxially. Styles 3(or 4), subequaling stamens. Capsule globose, ca. 4 mm in diam., with persistent, recurved calyx lobes. Fl. Mar-Apr, fr. Jul-Aug.
* Mixed forests, forest margins, thickets, mountain slopes; 1400-3000 m. SW Sichuan, Yunnan.