Crateva is a genus of flowering trees and shrubs in the caper family, Capparaceae, placed within the order Brassicales. The genus was established by Carl Linnaeus and published in his landmark Species Plantarum (1: 444) in 1753. It comprises approximately 21 accepted species distributed across the humid and seasonally dry tropics of the world, ranging from Mexico and the Caribbean south to northeastern Argentina, across sub-Saharan Africa, through the Indian subcontinent and Indochina, into southern China and Japan, and east through Malesia, Papuasia, Queensland, and the South Pacific.
Members of Crateva are deciduous or semi-evergreen trees or large shrubs, typically reaching 2–25 metres in height, with smooth, light brown to grey bark. The leaves are trifoliolate (three leaflets on a common petiole), a characteristic shared with other capers. Flowers are produced in terminal racemes and are notably showy: the petals are typically white to greenish-white, fading to cream, pink, or pale purple with age, and the flowers bear prominent, elongated stamens that give some species — notably Crateva religiosa — the common name "spider tree." The fruit is a globular to ovoid berry with fleshy, edible pulp.
The most widely known species is Crateva religiosa (sacred garlic pear or temple plant), a tree native to tropical Asia and the South Pacific that has long been associated with religious sites across South and Southeast Asia. The compound lupeol, found in the bark of C. religiosa, has attracted pharmacological interest. Crateva tapia (beach apple, toco) is the American representative of the genus, ranging from Mexico to southern Brazil and occurring in dry forests and disturbed soils at low to mid elevations. The flowers of Crateva species are attractive to insects and birds; the pierid butterfly Hebomoia glaucippe is a documented pollinator visitor of C. religiosa.
Etymology
The name Crateva commemorates Crateuas (also spelled Krateuas), a Greek herbalist and physician who served under Mithridates VI of Pontus in the first century BCE and is regarded as one of the earliest known botanical illustrators. The genus was named by Linnaeus in 1753.
Distribution
Crateva spans the pan-tropical belt, with species recorded from Mexico south to northeastern Argentina in the Americas; across sub-Saharan Africa; through the Indian subcontinent, Indochina, southern China, and Japan; and east through Malesia, Papuasia, Queensland, and the South Pacific islands. Crateva tapia occupies dry forests and disturbed sandy soils from sea level to about 1,000 m in the Neotropics, while Crateva religiosa is centred on tropical Asia and the South Pacific and is also cultivated in parts of Africa.
Ecology
Crateva species are characteristic of tropical forests, riverine margins, and seasonally dry woodlands. Their showy, nectar-rich flowers attract a variety of insects and birds; the pierid butterfly Hebomoia glaucippe is a documented visitor of Crateva religiosa. Crateva tapia favours dry forests and disturbed, often sandy soils, and has been observed growing sympatrically with C. palmeri in drier environments.
Cultural Uses
Crateva religiosa has long been planted near temples and sacred sites across South and Southeast Asia, giving rise to its common names "sacred garlic pear" and "temple plant." The fruit of C. religiosa is cultivated for food in parts of Africa, and the edible pulp of Crateva tapia — sweet-sour and fleshy — is consumed across its Neotropical range, reflected in common names such as "beach apple" and "naranjuelo."
Taxonomy Notes
Crateva was described by Linnaeus in Species Plantarum 1: 444 (1753) and is placed in the family Capparaceae, order Brassicales. GBIF records 32 descendant taxa under the backbone entry for Crateva L., while the Wikipedia article lists 21 currently accepted species. The genus has historically been spelled both "Crateva" and "Crataeva" (the latter appearing in some older literature); "Crateva" is the accepted orthography.
