1. Davis, P. H.Flora of Turkey and the East Aegean Islands; University Press: Edinburgh, U.K., 1982; Vol. 7, p 344.
2. Koneman, E. W.; Allen, S. D.; Janda, W. M.; Schreckenberger, P. C.; Winn, W. C. Color Atlas and Textbook of Diagnostic Microbiology; Lippincott-Raven: Philadelphia, PA, 1997; pp 785−856.