Shrub, 1-2(-3) m tall, glabrous; stem red-brown to red, sulcate or subsulcate; internodes 1-2.5(-3) cm long; spines (1-)3-fid, smooth, stout, 1-2 cm long. Leaves thick, rigid, rarely subrigid, sub-orbicular to obovate-oblong, sessile to very shortly stalked, (1-) 1.5-3 (-4) cm long, (0.5-) 1-1.5 (-2) cm broad, reticulately-veined, entire to 3-5(-8)-spinulose-serrate or subserrulate, apex spinulose-sub-apiculate. Racemes 10-25 mm long (in fruit), dense to lax, shortly peduncled (up to 1 cm). Flowers usually 7-10 mm across, yellow; pedicels 4-6(-10) mm long, slender, spreading; bracts 1-1.5 mm long, linear. Outer sepals 3-4 mm long, 1.5-2 mm broad; inner sepals 4.5 mm long, 2 mm broad; petals 5 mm long, 3 mm broad. Stamens 3-4 mm long; anthers 0.7 mm long; connective not extended. Berries ovoid to suborbicular, 5-7 mm long, 3-4 mm broad, black, pruinose blue; style very short to c. 0.5 mm long in fruit; seeds usually 2, oblong-subovoid, c. 4 mm long.