Basionym Name:Peronospora exigua Wm.G. Sm., Diseases of Field and Garden Crops, chiefly as are caused by fungi (London): 13 (1884)
Homotypic synonyms:Ovularia exigua (Wm.G. Sm.) Sacc., Syll. fung. (Abellini) 11: 598 (1895)