Cactus
of scandent habit, young stems climbing by means of adventitious
roots, older stems often sprawling over other vegetation; stems
angular and slightly winged; leaves absent, replaced by clusters
of spines, each cluster termed an areole; flowers lateral on the
stems, to 30 cm long, white, opening at night; fruit ca 10 cm
in diameter, covered with divergent scales, red at maturity, edible.
