E. communis
Introduction '''''E. communis''''' may refer to:* ''Erysiphe communis'', a synonym for ''Erysiphe cruciferarum'', a plant pathogen that causes powdery mildew on brassica, especially on brussels sprouts* ''Erysiphe communis f. betae'', a synonym for ''Erysiphe betae'', a form of powdery mildew that affects the sugar beet
See also * Communis (disambiguation)