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

Fig. 4. Numerous sclerotia of S. rolfsii var. delphinii were produced on cotton balls after incubation on moist sand. These sclerotia were used in field studies.



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