Sapotaceae is a family of flowering plants in the order Ericales. It comprises roughly 800 species distributed among some 35–75 genera, depending on how narrowly botanists define genera. Members are mostly evergreen trees and shrubs found throughout tropical regions of Africa, Asia, the Americas and various oceanic islands. Well known species include the shea tree (Vitellaria paradoxa), the sapodilla (Manilkara zapota) and several fruit-bearing Pouteria and Chrysophyllum species.
Characteristics
Sapotaceae plants typically have simple, alternate, leathery leaves and milky latex in many species. Flowers are often bisexual, small to medium in size, with a tubular corolla and a variable number of stamens. The fruit is usually a berry or drupe containing one or more seeds; seeds often have a glossy, hard coat. Wood tends to be dense and durable. These anatomical and reproductive features help distinguish the family from other tropical groups.
Distribution and evolution
The family has a pantropical distribution, occurring widely in lowland and montane tropical forests, savanna pockets and secondary growth. Its spread across tropical continents suggests a long evolutionary history, with lineages diversified in different regions. Molecular phylogenetic studies over recent decades have clarified relationships within the family and between Sapotaceae and other members of the Ericales.
Uses and economic importance
Sapotaceae species are economically important for several reasons. The shea tree produces shea butter, a major source of edible and cosmetic fat. Manilkara species have provided chicle, historically used as a chewing-gum base, and edible fruit. Many genera yield nutritious fruits (e.g., star apples, mamey-like fruits) and durable timber used in furniture and construction. Local communities also use parts of these plants in traditional medicine.
Taxonomy and notable genera
- Vitellaria — shea tree (shea butter)
- Manilkara — sapodilla and sources of chicle
- Chrysophyllum and Pouteria — fruit-bearing trees
- Synsepalum — includes the 'miracle fruit' with taste-modifying properties
The family has undergone taxonomic revision as botanists apply molecular data to clarify generic limits; consequently, the number of recognized genera varies between treatments. Conservation concerns affect some Sapotaceae species because many are slow-growing, heavily exploited for timber or oils, and restricted to fragmented tropical habitats.