Coffee Culture - Before discussing specific kinds of coffee beans. Let's first talk about the Coffee Plant. Coffee trees are not really trees whatsoever as Botanically they may be "shrubs" The coffee plant is part of the Rubianceae family native to the mountains of Yemen in Arabia. - How to brew Coffee

Coffee Culture - While there are over seventy-three classified species of the Coffee Plant, only three are used in significant quantities for commercial coffee production. Those three varieties where virtually all coffee sold comes from arearobusta and arabica, and liberica.