Fever tree is an attractive, semi-deciduous to deciduous tree. The characteristic, almost luminous, lime green to greenish-yellow bark is smooth, slightly flaking, and coated in a yellow powdery substance. If the powdery surface is rubbed away with the finger it will reveal a green bark beneath. It has a slender to spreading, sparse, roundish crown of feathery foliage. The thorns are long, straight and paired. This species occurs in groups in low-lying swampy areas. Because its range coincides with regions where malaria is prevalent, it is called "Fever Tree."