Northern Polyblastia Lichen (Polyblastia hyperborea) (IMAGE) Pensoft Publishers Caption An ascospore from a Northern Polyblastia Lichen (Polyblastia hyperborea) collected near the Flashline Mars Arctic Research Station in Nunavut, Canada. Spore morphology is another important character for lichen identification. Credit Paul Sokoloff/Canadian Museum of Nature Usage Restrictions Credit must be given to the creator. License CC BY 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.