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FOC | Family List | FOC Vol. 14 | Apiaceae | Rhododendron

426. Rhododendron albertsenianum Forrest ex I. B. Balfour, Notes Roy. Bot. Gard. Edinburgh. 11: 21. 1919.

亮红杜鹃 liang hong du juan

Shrubs 1–3 m tall; young shoots thinly whitish floccose-tomentose, eglandular. Petiole 6–10 mm, whitish tomentose; leaf blade leathery, elliptic, 4–5.5(–9) × 1–2.5 cm; base cuneate, unequal; apex rounded, apiculate; abaxial surface with indumentum 2-layered, continuous, upper layer light brown, woolly, loose; lower layer felted and compacted; adaxial surface green, glabrous; midrib grooved; lateral veins 12–15-paired, impressed. Inflorescence umbellate, 5- or 6-flowered; rachis 2–3 mm, brown-floccose. Pedicel 1(–1.8) cm, with same indumentum; calyx red, cupular, fleshy, 2.5–4 mm, tomentose; corolla tubular-campanulate, bright crimson-rose, ca. 3 cm, glabrous; lobes 5, suborbicular, ca. 1.7 × 2.2 cm; stamens 10, unequal, 2–2.5 cm, filaments glabrous; ovary conoid, tapering into style ca. 5.5 mm, tomentose; style glabrous; stigma small. Capsule cylindric, 8–12 × 4–5 mm, with remnants of indumentum. Fl. Jul, fr. Oct.

Thickets, mountain slopes; 3200–3300 m. W Yunnan.


 

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