Description from
Flora of China
Vaccinium carlesii Dunn var. longicaudatum (Chun ex W. P. Fang & Z. H. Pan) P. C. Tam.
Shrubs evergreen, 1.5–4 m tall. Twigs slightly angled, initially puberulous, glabrescent; bud scales inconspicuous. Leaves scattered; petiole 6–7 mm, puberulous; leaf blade elliptic-lanceolate, 4.5–7 × 1.8–2.5 cm, leathery, secondary veins 6 pairs, ascending, barely evident, base cuneate or broadly cuneate, margin plane, sparsely serrulate, apex caudate-acuminate. Inflorescences racemose, 1.5–2 cm, glabrous, 10–15-flowered; bracts broadly elliptic. Pedicel 1–1.5 mm; bracteoles lanceolate, ca. 1.5 mm. Calyx lobes triangular, ca. 1 mm, margin sparsely ciliate. Corolla white, tubular, 4–4.5 mm, glabrous; lobes triangular-ovate, ca. 1.5 mm. Filaments ca. 0.6 mm, subglabrous; anthers 1–1.2 mm, with 2 small spurs, tubules shorter than thecae, ca. 0.8 mm. Berry red, ca. 5 mm in diam. Fl. Jun, fr. Nov.
Open montane forests; 700–1600 m. Guangdong, Guangxi, Guizhou, Hunan.