井冈山杜鹃 jing gang shan du juan

Shrubs 2–4(–5) m tall; branches stout. Petiole 15–20 mm, floccose at first, glabrescent; leaf blade leathery, oblong or oblong-lanceolate, broadest above the middle, 18–33 × 6–8 cm; base cuneate; margin undulate; apex acute; abaxial surface white-floccose, glabrescent; adaxial surface bright green; midrib prominent abaxially, grooved adaxially; lateral veins 18–24-paired. Inflorescence racemose-umbellate, 7- or 8-flowered; rachis ca. 15 mm, glabrescent. Pedicel 2.5–3 cm; calyx discoid, lobes 5, ca. 8 mm, oblique, ca. 2 mm; corolla obliquely campanulate, ventricose, purple, 6–7 cm, lobes 5, emarginate; stamens 16, unequal, 2.8–3.6 cm, filaments pubescent at base; ovary ovoid, glabrous; style ca. 4.5 cm, puberulent; stigma swollen, discoid, ca. 6 mm in diam. Capsule curved, ca. 25 mm. Fl. Sep.

Forests, valleys; 1100–1200 m. W Jiangxi (Jinggang Shan).