This is a large species of cycad, which grows like a tree with a trunk about 2.5 m tall and 60 cm in diameter.
Its palm-like leaves are 120-200 cm long, made up of leaflets 18-26 cm long, thick, dark green, and very shiny. The petioles and trunk of the tree are covered with rigid, sharp spines. Plants in this family are either male or female, producing pollen cones (30-40 x 5-10 cm) or larger seed cones (55-65 x 15-20 cm) respectively. Seeds form on the seed cones only, and are oblong (30-40 x 14-20 mm) and bright, lipstick red.
(Staples, G. W. and D. R. Herbst. 2005. A Tropical Garden Flora: Plants cultivated in the Hawaiian Islands and other tropical places. Bishop Museum Press, Honolulu, Hawai`i.)