Coffea arabica

Coffea arabica (əˈræbɪkə), also known as the Arabic coffee, is a species of flowering plant in the coffee and madder family Rubiaceae. It is believed to be the first species of coffee to have been cultivated and is currently the dominant cultivar, representing about 60% of global production. Coffee produced from the less acidic, more bitter, and more highly caffeinated robusta bean (C. canephora) makes up most of the remaining coffee production. The natural populations of Coffea arabica are restricted to the forests of South Ethiopia and Yemen. Coffea arabica is called بُنّ (būnn) in Arabic. Coffea arabica was first described scientifically by Antoine de Jussieu, who named it Jasminum arabicum after studying a specimen from the Botanic Gardens of Amsterdam. Linnaeus placed it in its own genus Coffea in 1737. Coffea arabica is the only polyploid species of the genus Coffea, as it carries 4 copies of the 11 chromosomes (44 total) instead of the 2 copies of diploid species. Specifically, Coffea arabica is itself the result of a hybridization between the diploids Coffea canephora and Coffea eugenioides, thus making it an allotetraploid, with two copies of two different genomes. This hybridization event at the origin of Coffea arabica is estimated between 1.08 million and 543,000 years ago and is linked to changing environmental conditions in East Africa. Wild plants grow between tall, and have an open branching system; the leaves are opposite, simple elliptic-ovate to oblong, long and broad, glossy dark green. The flowers are white, 10–15 mm in diameter, and grow in axillary clusters. The seeds are contained in a drupe (commonly called a "cherry") 10–15 mm in diameter, maturing bright red to purple and typically containing two seeds, often called coffee beans. Endemic to the southwestern highlands of Ethiopia, Coffea arabica is today grown in dozens of countries between the Tropic of Capricorn and the Tropic of Cancer. It is commonly used as an understory shrub. It has also been recovered from the Boma Plateau in South Sudan.

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Coffea arabica

Coffea

Coffea is a genus of flowering plants in the family Rubiaceae. Coffea species are shrubs or small trees native to tropical and southern Africa and tropical Asia. The seeds of some species, called coffee beans, are used to flavor various beverages and products. The fruits, like the seeds, contain a large amount of caffeine, and have a distinct sweet taste. The plant ranks as one of the world's most valuable and widely traded commodity crops and is an important export product of several countries, including those in Central and South America, the Caribbean and Africa.

Coffee

Coffee is a beverage prepared from roasted coffee beans. Darkly colored, bitter, and slightly acidic, coffee has a stimulating effect on humans, primarily due to its caffeine content. It has the highest sales in the world market for hot drinks. The seeds of the Coffea plant's fruits are separated to produce unroasted green coffee beans. The beans are roasted and then ground into fine particles that are typically steeped in hot water before being filtered out, producing a cup of coffee.

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