Mammea americana

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Related Links
Detail of leaves, flowers and fruits.
© Morton J.
Flower Close-up
© Dan Skean, Jr., July 1983

Local names:
English (St. Domingo apricot,South American apricot,mammee apple,mamme,mamey), French (abricot d' Amerique,abricot de Saint-Dominque,abricot des Antilles,abricot pays,abricotier sauvage), Portuguese (abrico selvagem,pecego de Sao Domingos,abricote,abrico

Mammea americana is an evergreen tree, 18-21 m tall, with a short trunk that may attain 0.9-1.2 m in diameter, and ascending, densely foliaged branches forming an erect, oval head.

Leaves glossy, opposite, leathery, dark-green, broadly elliptic leaves, up to 20 cm long and 10 cm wide. 

Flowers fragrant, white, 2.5-4 cm wide when fully open, may be staminate, pistilate or polygamous; borne singly or in clusters of 2 or 3 on axils of young branches. Male, female and hermaphrodite together or on separate trees. 

Fruit nearly round or somewhat irregular, with a short, thick stem and a more or less distinct tip or merely a bristle-like floral remnant at the apex, ranges from 10-20 cm in diameter, is heavy (0.5-2 kg) and hard until fully ripe when it softens slightly. The skin is light brown or greyish-brown with small, scattered, warty or scurfy areas, leathery, about 3 mm thick and bitter. Beneath it, a thin, dry, whitish membrane, astringent and often bitter, adheres to the flesh. The latter is light or golden-yellow to orange, non-fibrous, varies from firm and crisp and sometimes dry to tender, melting and juicy. It is more or less free from the seed though bits of the seed covering, which may be bitter, usually adhere to the immediately surrounding wall of flesh. The ripe flesh is appetizingly fragrant and, in the best varieties, pleasantly sub acid, resembling the apricot or red raspberry in flavor. Fruits of poor quality may be too sour or mawkishly sweet. Small fruits are usually single-seeded; larger fruits may have 2, 3 or 4 seeds.

Seed russet-brown, rough, ovoid or ellipsoid and about 6.25 cm long. The juice of the seed leaves an indelible stain.

The generic name is from a West Indian name, ‘mammey’ for a member of the genus. The specific epithet means ‘of American origin’.

Ecology

The mamey is limited to tropical or near tropical moist to wet climates. In Central America, it thrives from near sea-level to 1 000 m. It is frost tender. Within its natural range, mamey is most frequently found in semi-cultivation or in areas that have been disturbed. Consequently, it is frequently associated with exotic and aggressive native secondary species such as Mangifera indica, Spathodea campanulata and Artocarpus altilis.

Native range
Dominican Republic, Haiti, Jamaica, Puerto Rico

Tree management

Spacing of 10 m is recommended if fruit is going to be cultivated, closer spacing is desirable for wood production. Mamey coppices well and generally receives little or no cultural attention, apart from protection from cold during the first few winters in other than strictly tropical climates. It seems remarkably resistant to pests and diseases.

Seed may be recalcitrant; viability is maintained for 2-4 months in moist storage at 20 deg C. There are about 14 seeds/kg.

The mamey is limited to tropical or near tropical moist to wet climates. In Central America, it thrives from near sea-level to 1 000 m. It is frost tender. Within its natural range, mamey is most frequently found in semi-cultivation or in areas that have been disturbed. Consequently, it is frequently associated with exotic and aggressive native secondary species such as Mangifera indica, Spathodea campanulata and Artocarpus altilis.

Seeds are the usual means of propagation and they germinate in 1-4 months with a 97% rate. Seeds sprout readily in leaf-mulch under the tree. Grown under light shade, seedlings reach 40-50 cm and are ready to out-plant 3-5 months after sowing. Vegetative propagation is preferable to avoid raising male trees and to achieve earlier fruiting; grafting the mamey onto self-seedlings has also been successfully employed.

Poison:  All parts of the mamey have insecticidal properties; infusions of the powdered seeds and gum from the bark and green fruit rind are used as insecticides to kill ticks, fleas and jiggers. In Puerto Rico mamey leaves are wrapped around young tomato plants when setting them in the ground to protect them from mole crickets and cutworms. Various extracts from the fruit, bark, leaves or roots are toxic to moths, beetle larvae and also to bugs. Seed extracts are toxic to fish, chicks and hogs. 

Erosion control:  The large spreading lateral roots prevent soil erosion.

  The fruit may be eaten fresh or made into preserves and is used as filler for products made of other fruits. Slightly under-ripe fruits, rich in pectin, are made into jelly.

The tree is used as fuel.

Timber:  The heartwood is reddish or purple-brown; sapwood much lighter in color. Wood hard and heavy with a specific gravity of 0.86-0.98 g/cu cm, easy to work, fine-grained and strong; has an attractive grain and polishes well. It is useful in cabinetwork, valued for pillars, rafters, decorative features of fine houses, interior sheathing, turnery and posts since it is fairly decay-resistant. It is, however, highly susceptible to termites. 

Shade or shelter:  The mammey is planted as a shade and windbreak.

Tannin or dyestuff:  The tannin from the bark is sometimes used for home treatment of leather in the Virgin Islands. 

Medicine:  Uses of mamey in folk medicine include treatment of scalp infections, diarrhoea, digestive and eye problems. In Venezuela, powdered seeds are employed in the treatment of parasitic skin diseases. In Brazil, the ground seeds, minus the embryo which is considered convulsant, infusion is employed as an anthelmintic for adults only. In the French West Indies, an aromatic liqueur called Eau de Creole or Creme de Creole, is distilled from the flowers and said to act as a tonic or digestive. An infusion of the fresh or dry leaves is given in cases of intermittent fever.

Ornamental:  Mammey’s dark-green, shiny leaves and dense foliage make it a beautiful ornamental tree; it is planted for shade around houses, parks and along streets.

Trees are usually planted along boundaries and fences.

Alcohol:  Wine is made from the fruit and fermented toddy from the sap of the tree in Brazil. Liquor is distilled from fermented flowers.