The coffee plant is a woody perennial evergreen dicotyledon that belongs to the Rubiaceae family. It has a main vertical trunk (orthotropic) and primary, secondary, and tertiary horizontal branches (plagiotropic). Two main species of coffee are cultivated today. Coffea arabica known as Arabica coffee accounts for 75-80% of the world's production. Coffea canephora, known as Robusta coffee, is more robust than the Arabica plants, but produces an inferior tasting beverage with a higher caffeine content. The coffee plant can grow to heights of 10 meters if not pruned, but producing countries will maintain the coffee at a height reasonable for easy harvesting.