Cucumber-Leaf Sunflower (image) American Society of Agronomy Caption Known commonly as cucumber-leaf sunflower, Helianthus debilis Nutt. subsp. cucumerifolius is a wild relative of cultivated sunflower. Credit Kasia Stepian Usage Restrictions The image may only be used with an appropriate caption and credit. 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.