Spiny bush or tree, 2-3 m tall, spines short and sharp. Leaves 30-60 x 10-38 mm, elliptic-oblong, crenate; petiole narrowly winged. Flowers 3-10, perfect and staminate, white. Calyx cupular, fleshy. Fruit ovoid or rounded, 25-50 mm in diameter, shortly mamillate; greenish-yellow when ripe, pulp greenish, very acid.