Stems bear sharp, curved, reflexed (backward-pointing) prickles, the bark becoming somewhat corky with age.
Leaves compound (bipinnate, or twice-divided), opposite, to 40cm in length, having 4-7 pairs of secondary pinnae, each pinna bearing 14-16 dark green obovate leaflets to 3 cm by 2 cm.
Form. Photo: Robert Whyte
Fruit a flattened, winged pod to 5cm by 1.5cm, containing a single, patterned seed about 2cm long. Ripe Dec to March.
Flowers attractive to butterflies.
Propagation by scarified seed.
Requires good drainage. Moderately frost tolerant. Useful for preventing pedestrian access. Seeds very decorative.
Thorns. Photo: Robert Whyte