猫儿山杜鹃 mao er shan du juan

Trees 8–12 m tall; older branches grayish; shoots ca. 12 mm in diam. below inflorescence; young shoots pale purple, glabrous. Petiole pale purple, 15–20 mm, glabrous; leaf blade thickly leathery, usually oblanceolate, rarely obovate, 14–16 × 4–5 cm; base cuneate; apex obtuse or acute; both surfaces glabrous; abaxial surface pale green, yellowish when dry; adaxial surface dark green, midrib prominent abaxially, slightly grooved adaxially; lateral veins 19–21-paired, distinct. Inflorescence 9–10-flowered; rachis 40–50 mm, sparsely glandular. Pedicel 3–4.5 cm, glandular-hairy; calyx discoid, glandular outside; corolla campanulate, white, 6–6.5 cm, lobes 7, suborbicular, ca. 2.5 cm, emarginate; stamens 14–17, 2.5–4 cm, filaments glabrous; ovary ovoid, ca. 6 mm, densely glandular-hairy; style stout, pale purple, ca. 5 cm, sparsely glandular; stigma discoid, ca. 4 mm in diam. Capsule oblong, 20–30 mm, calyx and style persistent. Fl. May, fr. Sep.

Forests, streamsides; 1800–1900 m. NE Guangxi.