140. Berberis mekongensis W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 9: 82. 1916.
湄公小檗 mei gong xiao bo
Shrubs, deciduous, 1-2 m tall. Branches brownish gray, angulate, sparsely black verruculose; shoots initially puberulous, often ultimately glabrous; spines 3-fid, pale yellow, 1-2.5 cm, adaxially slightly sulcate. Petiole 3-10 mm; leaf blade adaxially deep yellow-green, obovate or broadly obovate, 1.5-4.5 × 1-2 cm, papery, abaxially papillose, not pruinose, midvein and lateral veins obviously raised, adaxially with slightly raised midvein and lateral veins, both surfaces with conspicuous reticulate veins, base cuneate, margin entire or 10-15-spinose-serrate on each side, apex rounded. Inflorescence an umbellate raceme, 6-12-flowered, 3-7 cm, with few fascicled flowers at base; bracts 1-1.5 mm. Pedicels 4-15 mm, glabrous. Sepals in 3 whorls; outer sepals lanceolate, ca. 4 × 1.4 mm; median sepals oblong-elliptic, 5-5.5 × 2-3 mm; inner sepals obovate, 6-6.5 × 3.5-4 mm. Petals obovate, 4-5 × 2.5-3.5 mm, base clawed, with separate glands, apex acute, incised. Stamens ca. 3.5 mm; anther connective prolonged, truncate. Ovules 2-4. Berry red, oblong, 8-10 × 4-6 mm, not pruinose, style not persistent. Fl. Jun-Jul, fr. Oct-Nov.
● Alpine thickets, Abies or Picea forests, sunny places; 3000-4000 m. Sichuan, Xizang, Yunnan.