The citron (scientific name: CitrusmedicaL.), also known as citron or citron seed, is an irregularly branched shrub or small tree. Newborn shoots, buds and flower buds are dark purple-red. Leaves are simple, sparsely and concurrently single compound, with elliptic or ovate-elliptic blades and shallowly obtusely lobed teeth on the leaf margins. Racemes with up to 12 flowers and 5 petals. Fruit ellipsoid, suborbicular or narrowly fusiform at both ends, weighing up to 2000 grams, pericarp yellowish, rough, difficult to peel, flesh colorless, nearly transparent or pale milky yellow, crisp, sour or slightly sweet taste, fragrant; seeds small, smooth, cotyledons milky white, many or single embryo. Flowering April-May, fruiting October-November.