Description from Flora of China
Berberis tsarongensis var. megacarpa Ahrendt, p.p.
Shrubs, deciduous, ca. 1.5 m tall. Branches brownish gray; shoots purplish red, angulate, sparsely black verruculose; spines simple or 3-fid, weak, 1-1.7 cm. Leaves subsessile; leaf blade abaxially grayish green, adaxially green, obovate or oblong-elliptic, 1.2-3.5 × 0.6-1.2 cm, thinly papery, abaxially papillose, not pruinose, midvein slightly raised, lateral veins 2 or 3 pairs, conspicuous, adaxially with flat midvein, both surfaces with inconspicuous reticulate veins, margin entire or 1-4-spinose-serrate on each side, apex rounded, obtuse. Inflorescence an umbellate raceme, 4-6-flowered, 1.5-3.5 cm including peduncle 5-9 mm. Pedicels weak, 8-20 mm, glabrous; bractlets ca. 2 mm, apex acute. Sepals in 2 whorls; outer sepals oblong-elliptic, 3-4 × ca. 2 mm; inner sepals obovate, ca. 5 × 4 mm. Petals oblong-obovate, ca. 5.5 × 3.5 mm, base cuneate with separate ovate glands, apex emarginate, lobes rounded, obtuse. Stamens ca. 3.5 mm; anther connective rounded, apiculate. Ovules 2. Berry red, oblong-ellipsoid, 8-15 × 4-7 mm, not pruinose, style not persistent; seeds 2. Fl. Apr-May, fr. Jun-Oct.
● Thicket-meadows, slopes, forest margins, mixed forests; 2900-3900 m. Xizang, Yunnan.