Citron is a slow-growing shrub or small tree that reaches a height of about 3 metres. The leaflets are evergreen, lemon-scented and ovate, with a leathery texture. Its flower buds are large and white or purplish; the fragrant flowers grow in clusters each measuring about 4 centimetres wide with 5 petals and many stamens. The citrus is fragrant, mostly oblong in shape, often with a rough surface and variable in size from 9-22 centimetres long. When ripe, the peels is often yellow, pulp pale-yellow or greenish divided into many segments, and unlike common citrus fruit in that the pulp is dry with little insipid juice. The primary content is its thick white rind that adheres to the segments, and is most commonly used for its zest or fragrance.