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| Persea
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Many, including: P. alpigena P. americana - Avocado P. borbonia - Redbay P. caerulea P. cinerascens P. edulis P. ichangensis P. indica - Viñátigo P. japonica P. lingue - Lingue P. macrantha P. nanmu P. palustris - Swampbay P. schiedeana P. thunbergii P. yunnanensis |
Persea is a genus of about 150 species of evergreen trees belonging to the laurel family, Lauraceae. The best-known member of the genus is the Avocado P. americana, widely cultivated in subtropical regions for its large, edible fruit.
They are medium-size trees, 15-30 m tall at maturity. The leaves are simple, lanceolate to broad lanceolate, varying with species from 5-30 cm long and 2-12 cm broad, and arranged spirally or alternately on the stems. The flowers are in short panicles, with six small greenish-yellow perianth segments 3-6 mm long, nine stamens and an ovary with a single embryo. The fruit is an oval or pear-shaped drupe, with a fleshy outer covering surrounding the single seed; size is very variable between the species, from 1-1.5 cm in e.g. P. borbonia and P. indica, up to 10-20 cm in P. americana.
The species of Persea have a disjunct distribution, with about 70 Neotropic species, ranging from BrazilThis article is about Brazil, the country. For other article subjects named Brazil see Brazil (disambiguation). The Federative Republic of Brazil Republica Federativa do Brasil in Portuguese) is the largest and most populous country in South America. and ChileThe word chile may also refer to Chilli pepper. The Republic of Chile is a republic located on the southwestern coast of South America. It is a long and narrow piece of land between the Andes mountains and the Pacific Ocean. It shares borders with Argenti in South AmericaSouth America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. South America is situated between the Pacific Ocean and the Atlantic Ocean. It became attached to North America only recently, geologically speaking, wi to Central AmericaCentral America is the region of North America located between the southern border of Mexico and the northwest border of Colombia, in South America. Some geographers classify Central America as a large isthmus, and in this geographic sense it sometimes in and MexicoThis article is about the country Mexico. For other meanings, see Mexico (disambiguation The United Mexican States or Mexico ( Spanish: Estados Unidos Mexicanos or Mexico regarding the use of the variant spelling Mejico see section The name below) is a co, the West Indies, and the southeastern United States; a single species, P. indica, endemic to the Macaronesian islands, including Madeira and the Canary Islands; and 80 species inhabiting east and southeast Asia. None of the species is very tolerant of severe winter cold, with the hardiest, P. borbonia, P. ichangensis and P. lingue, surviving temperatures down to about -12°C; they also require continuously moist soil, and do not tolerate drought.
Fossil evidence indicates that the genus originated in West Africa during the Paleocene, and spread to Asia, to South America, and to Europe and thence to North America. It is thought that the gradual drying of Africa, west Asia, and the Mediterranean from the Oligocene to the Pleistocene, and the glaciation of Europe during the Pleistocene, caused the extinction of the genus across these regions, resulting in the present distribution.