Four new rust taxa on Asteraceae from Central Alborz, northern Iran

During the study of the rust mycobiota of Central Alborz, four new taxa ( two species and two varieties) were found: Puccinia artemisiae-chamaemelifoliae on Artemisia chamaemelifolia, P. crepidis-asadbarensis on Crepis asadbarensis, P. jaceae var. elbursensis on Centaurea behen, and P. punctiformis var. karajensis on Cirsium arvense.