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

410. Rhododendron schistocalyx I. B. Balfour & Forrest, Notes Roy. Bot. Gard. Edinburgh. 13: 58. 1920.

裂萼杜鹃 lie e du juan

Shrubs, 5–7 m tall; branchlets slender, ca. 4 mm in diam. below inflorescence, stellate-tomentose, glabrescent. Petiole cyllindric, 10–20 mm, stellate-tomentose, glabrescent; leaf blade thinly leathery, oblong-elliptic to oblanceolate, 10–16 × 3–5 cm; base rounded or cuneate; apex obtuse or rounded, apiculate; abaxial surface persistently tomentose towards base, especially near prominent midrib, hairs stellate; adaxial surface green, glabrous at maturity; midrib grooved adaxially; lateral veins 14–16-paired, flat on both surfaces. Inflorescence racemose-umbellate, 5- or 6-flowered; rachis conical, 5–8 mm, stellate-tomentose. Pedicel 1–1.5 cm, stellate-tomentose; calyx reddish, cupular, membranous; lobes 4 or 5, 1–2 cm, irregular, glabrous, margin ragged or fimbriate; corolla tubular-campanulate crimson, 4–5 cm, with 5 nectar pouches; lobes 5, rounded, ca. 1.2 × 1.6 cm, emarginate; stamens 10, unequal, 2–3 cm, filaments pubescent at base; ovary cylindric-conoid, ca. 5 × 3 mm, densely stellate-tomentose; style 3–3.5 cm, lower half stellate-tomentose, stigma small. Capsule cylindric, curved, ca. 15 mm, with brownish hairs. Fl. Apr.

Rhododendron thickets; 2700–3300 m. SW Yunnan.


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