This paper represents the first in a series dealing with the systemati
cs of cercosporoid fungi from Brazil The present study revises 22 Cerc
ospora species reported or described from Brazil by Viegas in 1945. Se
veral new combinations and synonymies are made in Passalora, Phaeoisar
iopsis, Pseudocercospora and Mycovellosiella. In addition, Mycosphaere
lla eugenicola is newly described as the teleomorph of Pseudocercospor
a sphaerellae-eugeniae (Sacc.) Crous, Alfenas & R.W. Baretto comb. nov
. from leaves of Eugenia uniflora.