Catha

genus Catha noun a genus of African evergreen shrubs characterized by thick leaves and white flowers
Found on https://www.encyclo.co.uk/local/20974

Catha

Catha is a genus of plants of the family Celastraceae, mostly native to Africa. The leaves and twigs of one species are used to make khat, a drink similar to coffee.
Found on http://www.probertencyclopaedia.com/browse/BC.HTM
No exact match found