黄芦木 huang lu mu

Berberis vulgaris Linnaeus var. amurensis (Ruprecht) Regel.

Shrubs, deciduous, 2-3.5 m tall. Branches pale yellow or gray, slightly sulcate, not verruculose; internodes 2.5-7 cm; spines 3-fid, rarely simple, 1-2 cm. Petiole 5-10 mm; leaf blade abaxially pale green, adaxially dark green, obovate-elliptic, elliptic, or ovate, 5-10 × 2.5-5 cm, papery, abaxially with slightly raised midvein and lateral veins, reticulate veins slightly conspicuous, adaxially with impressed midvein and lateral veins, reticulate veins inconspicuous, base cuneate, margin 40-60-spinulose-serrulate on each side, apex acute or rounded. Inflorescence a raceme, 10-25-flowered, 4-10 cm including peduncle 1-3 cm. Pedicels 5-10 mm. Sepals in 2 whorls; outer sepals obovate, ca. 3 × 2 mm; inner sepals obovate, 5.5-6 × 3-3.4 mm. Petals elliptic, 4.5-5 × 2.5-3 mm, base slightly clawed, with separate glands, apex emarginate. Stamens ca. 2.5 mm; anther connective not prolonged, truncate. Ovules 2. Berry red, oblong, ca. 10 × 6 mm, not or slightly blue pruinose at base, style not persistent. Fl. Apr-May, fr. Aug-Sep. 2n = 28, 42.

Thickets, sparse forests, valleys, forest margins, streamsides, sides of rocks; 1100-2900 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi [Japan, Korea, Russia (Siberia)].