Mokha Yemeni type of coffee, both in terms of the family of cultivars planted there, and the general trade name.
The alternate spellings are Mocca, Moka, Mocha. The name refers to the former coffee port on the Red Sea called Al Mahka, and all the spellings are derived from a phonetic interpretation of the Arabic pronunciation for this town. It is no longer a coffee port, and most Yemeni coffee ships from Hodeidah, also on the Red Sea. In terms of cultivar, all types of Mokha coffee are proved to come from Harar, Ethiopia or other areas on the Eastern side of the Rift Valley. Yemeni Mokha coffee is the first commercially planted "farms" (the coffee is grown on stone walled terraces) and the souce for what would become Typica and Bourbon cultivars. So all coffee comes from West Ethiopia and the Boma plateau of Sudan, then to Eastern Ethiopia and Harar via the slave trade route, then to Yemen, then to the rest of the world. Moka is an established cultivar as well, found in many ICO coffee research gardens and grown in some locales (such as Maui, Hawaii).