Pittier has recently called attention to this species, which has been cultivated in Peru since ancient times. It is a tree 25 to 35 feet high, with a dense rounded crown. The leaves, which arc in bunches at the ends of the branchlets, are elliptic-ovate in outline, acute at the base, dark green above and paler or rusty below. The flowers are solitary or sometimes two or three together in the axils of the leaves. The fruit is round or ovate in form, about 3 inches long, green externally, with yellow flesh of mealy texture. The seeds are one to five in number (commonly two), flattened, and the size of chestnuts. The tree is thought to be a native of the maritime provinces of Chile and Peru. A few cultivated specimens have been seen in Costa Rica, but the species is not commonly grown outside its native region. It flowers and fruits throughout the year. The fruits must be stored in straw or chaff for several days after gathering before they are ready for eating. This species is believed to be represented by casts found in the graves of the ancient Peruvians. From the common name Iucmo (sometimes lucumo) the generic name Lucuma is taken.