Hemileia mussaendae Vienn.-Bourg., Bull. Soc. Mycol. France 67: 431, 1951.

= Hemileia pieningii Deighton, Trans. Brit. Mycol. Soc. 55: 497, 1970.

[= Hemileia mussaendae Cummins, Bull. Torrey Bot. Club. 87: 36, 1960 non Vienn.-Bourg. 1951, hom. illeg. non Vienn.-Bourg. 1951]

Comments.

Hemileia mussaendae Vienn.-Bourg. was the first name published for this species. Because the type specimen lacked teliospores, Cummins (1960) established a new name using another type specimen. Because Cummins’ (1960) name is a later homonym of Hemileia mussaendae Vienn.-Bourg., Deighton (1970) provided a new name based on the same type specimen. With the new ICN, the oldest epithet has priority.