523. Rhododendron meridionale P. C. Tam, Guihaia. 2: 71. 1982 [“meridionalis”].
南边杜鹃 nan bian du juan
Erect shrubs, ca. 3 m tall; branchlets slender, coarsely ferruginous strigose at first, later glabrescent. Summer and winter leaves different. Petiole 3–5 mm, densely dark brown strigose; leaf blade papery, lanceolate or narrowly lanceolate, 1.5–4 (–7.5) × 0.5–1.5 cm; base narrowly cuneate; margin revolute, undulate; apex shortly caudate-acuminate; midrib slightly impressed adaxially, lateral veins 5–6-paired, slightly impressed, not reaching the margin. Inflorescence 3–6-flowered. Pedicel 1.3–1.5 cm, densely coarsely long yellowish brown strigose; calyx lobes obscure, coarsely ferruginous setose-strigose; corolla broadly funnelform, purple or purple-red, without purple flecks, 2.8–3.1 cm; tube cylindric, 9–11 × ca. 4 mm, glabrous; lobes spreading, oblong-lanceolate, 1.6–2 × ca. 0.8 cm; stamens 5, subequal, ca. 3.5 cm, exserted, filaments glabrous; ovary ovoid, ca. 3 mm, densely coarsely yellow-brown setose-strigose; style ca. 3.5 cm, as long as stamens, glabrous. Capsules ovoid, ca. 7 mm, coarsely gray-brown-strigose. Fl. Mar–Apr, fr. Oct–Nov.
Valley forests, open forests, ravines; 500–1300 m. N and S Guangxi.