广南杜鹃 guang nan du juan

Shrubs or small trees, 8–10 m tall; young shoots brown, sparsely scaly. Petiole slender, 5–7 mm, scaly; leaf blade ovate, 2.5–5.5 × 1–2.3 cm; base broadly cuneate to rounded; apex acuminate, apiculate; abaxial surface scales 1–3 × their own diameter apart, all similar, midrib pubescent; adaxial surface sparsely scaly, these soon lost, pubescent along midrib; lateral veins 7-paired, thin, flat above and slightly raised below. Inflorescence terminal, shortly racemose, 4-flowered; rachis ca. 3 mm. Pedicel thin, 0.3–0.6 cm, with small scales; calyx rimlike, or undulate and 5-lobed, small, scaly; corolla broadly funnelform-campanulate, 5-lobed to the middle, white, 1.5–1.8 cm, outer surface scaly; lobes oblong; stamens 10, unequal, shorter than corolla; filaments puberulent at base; ovary densely scaly; style slightly longer than corolla, glabrous. Capsule not known. Fl. Mar.

Rocky mountains; ca. 1500 m. SE Yunnan.