The IUCN Endangered rating for wild Coffea arabica is built from range decline and climate-suitability modeling rather than a direct wild census with a published number, so how many wild individuals remain in the Ethiopian, South Sudanese and Yemeni highland forests is not established.
What would resolve this A range-wide field census of wild Coffea arabica stands across its native Ethiopian, South Sudanese and Yemeni highland forests.
OpenConservation botany / field ecologyCoffea arabica (Wikipedia)