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

253. Rhododendron coriaceum Franchet, J. Bot. (Morot). 12: 258. 1898.

革叶杜鹃 ge ye du juan

Rhododendron foveolatum Rehder & E. H. Wilson.

Small trees or shrubs, 3–10 m tall; older branches rough, glabrous; branchlets stout, usually ca. 10 mm in diam., grayish white tomentose. Petiole terete, 20–30 mm, sparsely tomentose; leaf blade leathery, obovate-elliptic to oblanceolate, broadest above middle of blade, 9–19 × 4–8 cm; base cuneate; apex obtuse or rounded, apiculate; abaxial surface foveolate, with dense, 2-layered, indumentum, upper layer of broadly cup-shaped non-fimbriate hairs, lower layer compacted; adaxial surface green, glabrous, midrib plane or slightly grooved adaxially; lateral veins 10–13-paired, obscure adaxially. Inflorescence racemose-umbellate, 8–16-flowered; rachis 10–15 mm, tomentose. Pedicel stout, 2–3 cm, sparsely tomentose; calyx ca. 1 mm; corolla funnel-campanulate, white or white-flushed rose, with a crimson basal blotch, 3–3.5 cm, lobes (5–)7; stamens 14, 1–2 cm, unequal, filaments pubescent at base; ovary ovoid, ca. 8 × 4 mm, densely rufous-tomentose. Capsule curved, 25–35 mm. Fl. May, fr. Jul–Sep.

Rhododendron forests, thickets; 2900–3400 m. SE Xizang, NW Yunnan.


 

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