532. Rhododendron naamkwanense Merrill, Lingnan Sci. J. 13: 42. 1934.
南昆杜鹃 nan kun du juan
Small shrubs, 1–1.5(–5) m tall; young shoots densely gray-brown strigose. Leaves all similar. Petiole 1–2 mm, coarsely gray-brown strigose; leaf blade leathery, oblong-obovate or oblong-oblanceolate, 1.5–4 × 0.5–1.2 cm; base cuneate; margin revolute, irregularly shallowly undulate-toothed; apex acute and mucronate; abaxial surface sparsely coarsely strigose especially on the midrib; adaxial surface with pale white wax when dried. Inflorescence 2–4-flowered. Pedicel ca. 0.7 cm, densely coarsely shiny-brown strigose; calyx obsolete, coarsely shiny-brown-strigose; corolla funnelform to narrowly campanulate, purple-red, the upper lobe with or without purple flecks, 2.5–2.8 cm; tube tapering toward the base, ca. 18 × 5 mm, outer surface glabrous, inner surface puberulent; lobes oblong-ovate to oblong-elliptic, ca. 1 × 0.8 cm; stamens 5, unequal, to 3.5 cm, exserted from corolla tube, filaments flat, with scurfy protrusion at base; ovary ovoid, densely shiny brown-strigose; style ca. 4 cm, longer than stamens, glabrous. Capsules long-ovoid, 5–6 mm, densely strigose. Fl. Apr–May, fr. Oct–Nov.
Forests, shaded rocky cliffs; 300–500 m. Guangdong, S Jiangxi.