防城杜鹃 fang cheng du juan

Shrubs, 4–9 m tall; older branches glabrescent, leaf traces conspicuous; branches stout, 5–6 mm in diam. below inflorescence, grayish brown tomentose when young. Petiole cylindric, 20–35 mm, pale gray or brown tomentose, glabrescent; leaf blade thickly leathery, long-lanceolate or narrowly oblanceolate, 8–15 × 1.5–3 cm; base cuneate; margin revolute; apex blunt; abaxial surface indumentum brownish; adaxial surface yellowish, with a thin wax coating, glabrous; midrib prominent abaxially, grooved adaxially; lateral veins obscure on both surfaces. Inflorescence 5–10-flowered; rachis ca. 10 mm, yellowish tomentose. Pedicel stout, 1–1.5 cm, pubescent; calyx discoid; lobes 5, ca. 1 mm; corolla funnel-campanulate, pink or white, 4–4.5 cm, lobes 5, orbicular, 1.5–2 cm; stamens 10, unequal, 2.2–3.5 cm, filaments pubescent below the middle; ovary cylindric-ovoid, ca. 6 × 4 mm, ca. 5-locular; style ca. 3.5 cm, densely brownish tomentose below, stigma glabrous, small. Capsule oblong-cylindric, ca. 10 × 6–7 mm; style persistent. Fl. Mar–Apr, fr. Jul–Aug.

Forests, thickets; 600–1400 m. S Guangxi.