It is a downy mildew that can infect pea plants.

In Iceland it grows on wild Vicia cracca and Lathyrus species.

[1] Liu, Jianfeng; Cao, Tiesen; Chang, Kan-Fa; Hwang, Sheau-Fang; Strelkov, Stephen E. (January 2013).

"Virulence and diversity of Peronospora viciae f. sp.

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