Citrus grandis

Citrus grandis, also treated as Citrus maxima and known as the pomelo or shaddock, is a large evergreen tree of the family Rutaceae, native to Southeast Asia and the largest of the citrus fruits. It grows 5 to 15 metres tall, with a spreading, somewhat irregular crown, often spiny twigs, and young shoots and flower buds that are downy. The glossy dark green leaves are large and leathery, with broadly winged petioles characteristic of the genus, and are dotted with aromatic oil glands. The large, fragrant white flowers are borne singly or in small clusters in the leaf axils. The fruit is very large, 15 to 30 centimetres across, more or less round to pear-shaped, with a thick pale-green to yellow rind and a thick spongy white albedo enclosing pale yellow, pink or red segments of large, firm, mildly sweet to tart juice vesicles. The peel, leaves and flowers are all strongly aromatic owing to abundant essential oils and flavonoids such as naringin. The species is widely cultivated throughout the tropics and subtropics for its edible fruit.