Bailey, L.H. & Bailey, E.Z. (1976) Hortus Third. A concise Dictionary of Plants Cultivated in the United States and Canada Macmillan Publishing Co, Inc., New York
Description of the genus
Small to medium-sized trees, without spines. Leaves simple or palmately compound. Flowers large, white, red or purple.
Closely related to Bombax but the leaflets are not articulated at the base and the calyx is usually truncate, glandular and persistent.