133. Berberis poiretii C. K. Schneider, Mitt. Deutsch. Dendrol. Ges. 15: 180. 1906.
细叶小檗 xi ye xiao bo
Berberis poiretii var. bisemilis P. Y. Li.
Shrubs, deciduous, 1-2 m tall. Branches grayish yellow; shoots purplish brown, angulate, black verruculose; spines absent or simple, sometimes 3-fid, 4-9 mm. Leaves subsessile; leaf blade abaxially pale green or grayish green, adaxially deep green, oblanceolate to narrowly oblanceolate, occasionally lanceolate-spatulate, 1.5-4 cm × 5-10 mm, papery, both surfaces glabrous, abaxially with raised midvein, lateral and reticulate veins conspicuous, adaxially with impressed midvein, base attenuate, margin entire, occasionally few spinulose-serrulate on each side, apex acuminate or acute, mucronulate. Inflorescence a spikelike raceme, 8-15-flowered, 3-6 cm including peduncle 1-2 cm; bracts linear, 2-3 mm. Pedicels 3-6 mm, glabrous; bractlets lanceolate, 1.8-2 mm. Sepals in 2 whorls; outer sepals elliptic or oblong-ovate, ca. 2 × 1.3-1.5 mm; inner sepals oblong-elliptic, ca. 3 × 2 mm. Petals obovate or elliptic, ca. 3 × 1.5 mm, base clawed, with separate glands, apex incised. Stamens ca. 2 mm; anther connective not prolonged, truncate. Ovules 1(or 2). Berry red, oblong, ca. 9 × 4-5 mm, not pruinose, style not persistent. Fl. May-Jun, fr. Jul-Sep. 2n = 28.
Thickets, forests, deserts, riverbanks in valleys, talus places; 600-2300 m. Hebei, Jilin, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shanxi [Korea, Mongolia, Russia (Far East)].