Studies on Septoria species in Iran-I.
Five Septoria species (S. capreae on Salix triandra, S. erigerontis on Conyza bonariensis, S. thelygoni on Thelygonum cynocrambe, S. triseti on Phalaris minor and S. viciosoi on Amii majus) are recorded as new to Iran. S. didyma on Salix sp. was also observed but this species has previously been reported in Iran. P. minor is reported as a new host of S. triseti. The morphological characteristics and conidial ontogenies of these species are described and illustrated.