细瘦杜鹃 xi shou du juan

Shrubs, branchlets slender, densely coarsely strigose. Petiole 2–5(–10) mm; leaf blade thin, papery, elliptic to long-ovate, 2–5.5(–10) × 0.9–1.9(–4.8) cm; base broadly cuneate or subrounded; margin obscurely crenate; both surfaces sparsely coarsely strigose; lateral veins only conspicuous on abaxial surface, not reaching margin. Inflorescence usually 2- or 3-flowered. Pedicel 0.4–0.5 cm, densely brown strigose, hairs flat; calyx obsolete; corolla funnelform, ca. 0.8 cm; tube ca. 5 mm, inner surface puberulent; stamens 5, unequal, 3 longer up to 1.2 cm, 2 shorter slightly longer than corolla, filaments flat, pubescent; ovary ovoid, coarsely strigose; style ca. 1.2 cm, as long as some of stamens, coarsely shiny brown-strigose in the lower half. Capsule conical, 5–6 × ca. 4 mm, densely coarsely strigose. Fl. May–Jun, fr. Jul–Nov.

Dense forests, mountain slopes; ca. 1500 m. NE Guangxi.

The original description was based on a type that originally possessed floral parts, which, however, no longer exist on the specimen.