Although there are about 70 different species of coffee trees, from dwarf shrubs to 40 - foot - tall [12 m] trees, only two species, Coffea arabica, or simply Arabica, and Coffea canephora, also known as Robusta, account for about 98 percent of the world’s production.
Kaut gan pasaulē ir ap 70 kafijkoku sugu, sākot ar sīkiem krūmiņiem un beidzot ar 12 metrus augstiem kokiem, apmēram 98 procentus kafijas produkcijas iegūst no divu sugu kafijkokiem: no Arābijas kafijkoka (Coffea arabica) jeb vienkārši arābikas un no Kongo kafijkoka (Coffea canephora), ko sauc arī par robustu.