The tree has large, lanceolate, ovate leaves with finely sawn or crimson edges, with prominent veins. On the shoots, there are thick, short spikes. New shoots have a characteristic reddish-purple color.
Flowers of the citron are hermaphroditic or male. They have a reddish, five-petaled crown, one pistil and numerous stamens. The citron, under natural conditions, blooms at least twice a year. In spring and autumn, the trees are covered with intensely sweet-smelling flowers.
The fruit is a yellow, egg-shaped berry 10-20 cm long and weighing about 4-5 kg, with a thick, waxy and wrinkled skin. The flesh of the citron is yellow, segmented and sour - not suitable for consumption.
The main part of the fruit (up to 70% by weight) is the peel and the white mesocarp (the middle layer of the fruit).
