Aegle is a genus of tree native to the Indian subcontinent and Southeast Asia. It has only one species. It is a deciduous shrub or small to medium-sized tree, up to 13 m tall with slender drooping branches and rather shabby crown. The bark is pale brown or grayish, smooth or finely fissured and flaking, armed with long straight spines. The leaf is trifoliate, alternate, ovate with tapering or pointed tip and rounded base, untoothed or with shallow rounded teeth. The flowers are pale green or yellowish, sweetly scented, bisexual, in short drooping unbranched clusters at the end of twigs and leaf axils. The aegle fruit is globose or slightly pear-shaped with a thick, hard rind and does not split upon ripening. The seeds are flattened-oblong.