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

439. Rhododendron parmulatum Cowan, Notes Roy. Bot. Gard. Edinburgh. 19: 182. 1936.

盘萼杜鹃 pan e du juan

Small shrubs, 1–2 m tall; shoots 3–4 mm in diam. below inflorescence; young shoots glabrescent; bud scales deciduous. Petiole ca. 5 × 2.7 mm, glabrescent; leaf blade leathery, elliptic to obovate, 5.2–6.4 × 2.5–3.2 cm; base rounded; apex apiculate; abaxial surface glaucous, papillate, midrib and main veins with white hairs; adaxial surface green glabrous; midrib grooved adaxially, lateral veins 11–13-paired, impressed adaxially. Inflorescence 4–6-flowered; rachis 3–5 mm, glabrous. Pedicel 1–2 cm, puberulent; calyx disk-shaped, fleshy, 4–6 mm, glabrous; corolla tubular-campanulate, white or yellow, sometimes flushed pink, with red flecks, 4–5 cm, 5 deep purple nectar pouches at base; lobes 5, rounded to obovate, 1.2–1.4 × 1.2–1.5 cm, emarginate; stamens 10, 1.7–2.8 cm, filaments puberulent on lower half; ovary cylindric, 5–6 mm, with a few scattered hairs; style 2.7–3 cm, glabrous. Capsule not known. Fl. Jun.

Pinus forests, cliffs; 3000–3700 m. S Xizang.


 

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