Deutzia Thunb.

Shrubs. Stems erect to spreading. Bark exfoliating in grayish, brownish, or reddish sheets or flakes. Branches erect, ascending, spreading, or arching; twigs with stellate and simple trichomes. Leaves deciduous or semideciduous, opposite; petiole present; blade lanceolate, elliptic, or ovate, herbaceous, margins serrulate to crenate-denticulate, plane; venation pinnate. Inflorescences terminal, corymbose cymes, panicles, or racemes, usually (2–)5–60-flowered, rarely flowers solitary; peduncle present or absent. Pedicels present. Flowers bisexual; perianth and androecium epigynous; hypanthium completely adnate to ovary, campanulate or ovoid, not ribbed in fruit; sepals deciduous, 5, erect, triangular to broadly ovate, glabrous or abaxially short-hairy or stellate-pubescent; petals 5 [10 in some cultivars], valvate or imbricate, spreading, white, pink, or purplish, elliptic to oblong, base clawed, surfaces glabrous or hairy; stamens 10, in 2 whorls; filaments distinct, dorsiventrally flattened or terete, gradually or abruptly tapered medially or filiform, apex 2-lobed or not lobed; anthers globose; pistil 3–5-carpellate, ovary completely inferior, 3–5-locular; placentation usually axile proximally and parietal distally, sometimes strictly parietal; styles persistent, 3(–4), distinct. Capsules hemispheric, cartilaginous, dehiscence acropetally septicidal along septum at base of fruit and also apically. Seeds 10–20 per locule, dark brown, ellipsoid. x = 13.