Shrub or small tree, up to 6 m high, armed with prominent spines. Branches smooth. Leaves single or clustered, narrowly obovate, 20-40(-80) x 10-30 mm, dark green, venation more prominent below. Inflorescence long and slender (up to 10 mm). Fruit a 3-lobed, woody capsule, 20 mm long, splitting to release seed enveloped by yellow aril. Flowers white.
Rigid, straggling, spiny shrub to 3 m. Leaves fasciculate, subsessile, leathery, obovate, margins slightly revolute, sometimes toothed. Flowers in axillary cymes, white. Capsules red seed aril orange.