Rhododendron longiperulatum Hayata

Small shrubs; young shoots densely finely castaneous strigose. Summer and winter leaves different. Petiole ca. 2 mm, coarsely brown strigose; leaf blade papery, ovate to ovate-oblong or oblong-lanceolate, 1.3–2.5 × 0.5–1.5 cm; base cuneate; margin entire, revolute; apex shortly acuminate to acute; both surfaces sparsely coarsely strigose. Inflorescence 2- or 3-flowered. Pedicel ca. 1.3 cm, densely shiny red-brown appressed-setose; calyx lobes triangular-ovate, ca. 2.5 × 1.5 mm, pale red-brown strigose; corolla funnel-campanulate, scarlet-red, ca. 3 cm; lobes oblong, ca. 1 cm, apex obtuse and rounded; stamens 10, unequal, most slightly shorter than the corolla, filaments flat, puberulent on lower half; ovary cylindric-ovoid, up to 3 mm, densely pale red-brown appressed-setose; style linear, glabrous. Capsules cylindric-ovoid, 8–15 mm, coarsely strigose. Fl. Mar–Apr.

N Taiwan.

Grasslands; 700–1000 m.