Spring Vetchling (Lathyrus vernus) (image) Stockholm University Share Print E-Mail Caption This is a spring vetchling (Lathyrus vernus), one of the species studied. Credit Katarina Fast Ehrlén/Stockholm University Usage Restrictions Image may be used in connection with news articles related to Stockholm University. Share Print E-Mail 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.