12. Vaccinium supracostatum Handel-Mazzetti, Sinensia. 5: 3. 1934.
凸脉越桔 tu mai yue ju
Shrubs evergreen, 0.7–2 m tall or small trees to 7 m tall, shortly branched. Twigs distinctly angled, initially pubescent, glabrescent; bud scales inconspicuous. Leaves rather dense; petiole flattened, 1.5–2 mm, pubescent; leaf blade obovate to elliptic, 3–4(–7) × 1.2–4 cm, leathery, abaxially glabrous, adaxially pubescent on midvein and secondary veins, secondary veins 5 or 6 pairs, strongly ascending, secondary and fine veins flat and inconspicuous abaxially, distinctly raised adaxially, base cuneate-attenuate, margin slightly recurved, entire, with 1(or 2) basal glands per side, apex shortly abruptly acuminate. Inflorescences racemose, 3–4 cm, glabrous or with glandular hairs, ca. 8-flowered; bracts and bracteoles caducous. Pedicel 3–4 mm, glabrous. Hypanthium ca. 1 mm, glabrous; calyx lobes triangular to ovate, 1.5–2 mm. Corolla virescent, tinged with purple, campanulate, ca. 5 mm, glabrous; lobes reflexed at apex, triangular, ca. 2 mm. Filaments 1–1.5 mm, laxly puberulent; anthers 3–8 mm, with 2 spreading spurs; tubules ca. 1.5 × as long as thecae. Berry 10-pseudoloculed, 4–5 mm in diam. Fl. Jun, fr. Jul–Aug.
Dense forests, thickets; 400–1700 m. N Guangxi, S Guizhou.