Abstract A description is provided for Hemileia coffeicola . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Coffea arabica; also on C. abeokutae, C. aruwimiensis, C. canephora, and C. liberica. DISEASE: Coffee rust. Producing a dusty coating of orange-coloured urediospores completely covering the undersides of the leaves, in contrast to the common coffee rust caused by H. vastatrix , which produces rounded blotches. There is at first no accompanying discoloration of the upper surface of the leaf; however, infected leaves eventually turn yellow and become desiccated. GEOGRAPHICAL DISTRIBUTION: Sao Tome and Principe Islands, Cameroon Republic, Northern Nigeria and Uganda.