Monographs Details: Berberis
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Genus Description - Sep 6, biseriate, petaloid, subtended by 2 or 3 small bracts; pet 6, biseriate, usually smaller than the sep and each with 2 basal glands; stamens 6; ovary with 1–few ovules; fr a berry; spiny shrubs; primary lvs of the shoot modified into simple or often trifid spines, bearing axillary fascicles of small foliage lvs; fls yellow, in racemes, or contracted into umbel-like clusters, or solitary; fr in ours red. 600, widespread.