素馨杜鹃 su xin du juan

Shrubs, to 5 m tall; young shoots shortly glandular-setose, glabrescent. Petiole 4–7 mm, densely coarsely silky brown-strigose; leaf blade thinly leathery, elliptic or elliptic-ovate, 4.5–8(–9.5) × 2.5–4.5 cm; base broadly cuneate; margin subentire; apex acuminate; abaxial surface sparsely shortly brown-setose; lateral veins 5–8-paired, not reaching margin. Inflorescence 10–12-flowered. Pedicel 0.8–1 cm, densely silky brown-strigose; calyx lobes small, triangular-ovate, densely shortly brown-setose; corolla narrowly funnelform, pink, without purple flecks, ca. 2 cm; tube cylindric, ca. 1.1 × 0.3 cm, both surfaces glabrous; lobes ovate, ca. 0.9 cm; stamens 5, unequal, 1.9–2.7 cm, exserted, filaments flat, glabrous; ovary ovoid, ca. 3 mm, densely shortly brown-setose; style purplish, 2–2.2 cm, often shorter than stamens, glabrous; stigma brown, capitate. Fl. Apr–May.

Mountain forests. E Guangxi.