河边杜鹃 he bian du juan

Shrubs, 1.5–3 m tall; young shoots coarsely strigose. Petiole 5–7(–10) mm; leaf blade long-ovate or elliptic long-ovate, 4–6(–14) × 1.5–3(–7.5) cm; base subrounded; margin revolute; apex shortly acute; abaxial surface sparsely coarsely ferruginous strigose; adaxial surface subglabrous. Inflorescence usually 4–7-flowered. Pedicel 0.5–0.8(–1.1) cm, densely coarsely ferruginous strigose; calyx lobes triangular-ovate, outer surface coarsely strigose; corolla funnelform, red or pink, with dark red flecks on upper lobes, 1.7–1.9 cm; tube cylindric, ca. 9 × 3–4 mm; lobes spreading, oblong-elliptic, 0.8–1 × 0.4–0.6 cm, glabrous; stamens 5, unequal, 1.7–2.4 cm, exserted, filaments puberulent at base; ovary ca. 3 mm, densely ferruginous strigose; style 2.4–2.9 cm, coarsely strigose for basal ca. 6 mm. Capsule ovoid, ca. 7 × 4 mm, coarsely strigose. Fl. Mar–Apr, fr. Jun–Jul.

River banks in evergreen broad-leaved forests or in the open; 1200–2100 m. S Yunnan.