Sclerotinia Spore Cups (IMAGE) University of California - Berkeley Caption The spore cups, or apothecia, of the fungus Sclerotinia sclerotiorum are about a half-centimeter across and produce thousands of spores throughout the spring and summer. The fungus is often hidden in fields, where they infect crops ranging from peanuts and cabbage to sunflowers. Credit Helene Dillard/Cornell University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.