A large cycad with a massive blackish trunk to 12 m tall and 40 cm diameter, swollen at the base, with occasional offsets produced on the trunk and sparse suckers arising from the base, growing in clumps of up to 6 stems. Blue green to grey green glossy leaves. The stout caudices, topped with thick arching fronds make them a very attractive species, and probably this is the cycad most mentioned as a food source by Northern Territory aborigines. Rainfall in its habitat is during summer, so this species does better if kept on the dry side during cold weather.
The name derives from the Latin angulatus, which translates as "angular", referring to the leaflet arrangement on the leaf petiole.