Taking notes (IMAGE) University of Turku Caption Janina Keskiniva taking notes on how the different fern species can be identified. Credit Hanna Tuomisto Usage Restrictions Photos can be used freely by media in related coverage as long as the name of the photographer is mentioned. Photographer: Hanna Tuomisto License Original 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.