What are the main types of coffee trees and where do most coffee trees grow?

The main species of coffee trees: Liberian species, namely large-grained species, native to Liberia in Africa, as well as Malaysia and other few countries. Its cultivation history is slightly shorter than the other two coffee trees. Liberian coffee trees are suitable for growing in lowlands. Its trunk is high and strong, it is 18 meters high, its leaves are large and tough, and its fruits and coffee beans are also very large. Its seed coat is close to the seed kernel and is scarlet when it is mature. The quoted flavor is strong, the caffeine content is medium, the irritation is strong, and the quality is poor. Because of its unique taste, low demand and small cultivated face value, it produces less than 5% of the world's coffee production. The main species of coffee trees: Ethel sa is a variety that was only discovered in 1904, originated in the Charlie River Basin in Africa, with small fruit and high yield per plant, especially a drought-resistant variety. The product has a strong flavor, slightly bitter taste and less cultivation. The main types of coffee trees: the first species of Arabica is Arabica beans, which account for 70% of the world's output. The world-famous Blue Mountain Coffee and Mocha Coffee are almost all Arabica species. The other is the Robasta species, which is native to the Congo in Africa and accounts for about 20% to 30% of the world's output. Different varieties of coffee beans have different tastes, but even the same varieties of coffee trees have their own unique flavor due to the influence of different soil and climate. The other two species are Liberian species and Esselsa species. The shape of the bean is small, the front is long oval, the middle crack is narrow and tortuous, and the arc on the back of the bean is flat. Arabica coffee is grown in Brazil and Colombia in South America, Central America, Costa Rica in the Caribbean, Guatemala, Jamaica, Mexico and Ethiopia. Arabica coffee beans are large, uniform in size and glossy in color. Coffee beans that are generally familiar to everyone, such as Santos in Brazil, Mantenin in Sumatra, Yemenmoka and the Blue Mountains in Jamaica, are all high-quality coffee beans grown in Arabica. Arabica coffee is more difficult to grow, they like mild days and colder nights, too cold, too hot, too humid climate can be fatal to it. Coffee trees in Arabica need to be planted on sloping slopes at high altitude. they grow luxuriantly in the highlands (600-1800 meters), and require special climatic conditions-the average annual temperature is about 20 degrees Celsius and there is plenty of rainfall without frost.