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

343. Rhododendron codonanthum I. B. Balfour & Forrest, Notes Roy. Bot. Gard. Edinburgh. 13: 249. 1922.

腺蕊杜鹃 xian rui du juan

Dwarf shrubs, 0.5–1.2 m tall; branchlets slender, sparsely easily deciduous rufous tomentose and glandular-hairy; bud scales ± persistent. Petiole 8–10 mm, floccose and glandular; leaf blade thickly leathery, oblanceolate to narrowly oblong, 3–6 × 1–2 cm; base obtuse or cuneate; margin revolute; apex acute; abaxial surface sparsely rufous-tomentose, indumentum ± detersile, midrib sparsely glandular-hairy; adaxial surface glabrous; midrib prominent abaxially; lateral veins 10–12-paired. Inflorescence umbellate, ca. 6-flowered; rachis short. Pedicel 2–2.5 cm, sparsely glandular-hairy; calyx pale yellow, lobes 5, 2–4 mm, oblong, fringed with glands; corolla campanulate, bright yellow, with crimson spots, ca. 3 cm, lobes 5, emarginate; stamens 10, unequal, filaments sparsely puberulent below middle; ovary ca. 4 mm, densely red shortly glandular-hairy; style ca. 2.1 cm, glandular to apex; stigma discoid. Fl. Jun.

Thickets, rocky hillsides; 3600–4300 m. NW Yunnan.


 

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