贡山杜鹃 gong shan du juan

Shrubs, 2–4 m tall; older branches glabrous; branches stout; young shoots usually ca. 5 mm in diam., glandular-hairy. Petiole 6–10 mm, glabrous; leaf blade leathery, oblanceolate or narrowly elliptic, 10–17 × 2.5–4 cm; base cuneate; apex acuminate, shortly cuspidate; abaxial surface greenish, hirsute-glandular, especially on veins; adaxial surface green, glabrous; midrib prominent abaxially, grooved adaxially; lateral veins 23–28-paired. Inflorescence racemose-umbellate, 17–21-flowered; rachis 15–20 mm, pubescent and glandular-hairy, glabrescent. Pedicel 0.5–0.7 cm, puberulent, glandular; calyx lobes 5, ca. 1.5 mm, glabrous; corolla tubular-campanulate, deep red, 3–3.5 cm, with 5 darker nectar pouches at base; lobes 5, suborbicular, ca. 1 cm, apex retuse; stamens 10, unequal, 2.5–3 cm, filaments reddish at base, glabrous; ovary cylindric, 8–11 × ca. 2.5 mm, floccose; style 2.5–3 cm, glabrous; stigma small. Capsule cylindric, ca. 20 × 4–5 mm, puberulent. Fl. Apr, fr. Oct.

Broad-leaved forest margins, slopes; 2200–2500 m. NW Yunnan.