Perennation of <i>Sclerotium rolfsii</i> var. <i>delphinii</i> in Iowa

Fig. 3. Map of locations in Iowa where the study of survival of S. rolfsii var. delphinii sclerotia was conducted. Muscatine is in southeast Iowa and Gilbert is in central Iowa.

Image from Plant Health Progress article:
Perennation of Sclerotium rolfsii var. delphinii in Iowa