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

542. Rhododendron crassistylum M. Y. He, J. Sichuan Univ., Nat. Sci. Ed. 24(1): 83. 1987.

粗柱杜鹃 cu zhu du juan

Low shrubs, ca. 1 m tall; old branches with hair remains; young shoots dark gray-brown, subverticillate, sparsely coarsely strigose. Petiole ca. 3.5 mm, hairy; leaf blade leathery, elliptic or elliptic-ovate, 1.3–2.5(–3) × 0.8–1.2 cm; base broadly cuneate or subrounded; margin slightly revolute, obtusely serrate; apex acuminate and mucronate; abaxial surface sparsely coarsely strigose; adaxial surface with mammiform prominences, subglabrous; midrib prominent abaxially, conspicuously impressed adaxially; lateral veins 4–5-paired, usually not obviously reaching the margin. Inflorescence 5–8(–13)-flowered. Pedicel ca. 0.7 cm, densely coarsely ferruginous strigose; calyx small, densely ferruginous-strigose; corolla funnelform, purplish, with dark purple flecks, 1–1.5 cm; tube cylindric, 5–7 × 3–4 mm, outer surface glabrous, inner surface puberulent; lobes spreading, oblong, ca. 0.6 × 0.3–0.4 cm, glabrous; stamens 5, subequal, 1.2–1.4 cm, exserted, filaments flat, glabrous; ovary conical, long-cylindric, ca. 3 mm, 5-loculed, densely coarsely ferruginous-strigose; style stout, ca. 1 cm, shorter than stamens, densely coarsely silky ferruginous-strigose below. Capsule conical, 4–5 mm. Fl. Apr–May.

Mountain thickets. SW Jiangxi.


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