Notes on the genus Pileolaria (Pucciniales)

The results showed that Pileolaria terebinthi, type species of the genus Pileolaria is not a hemi–form or brachy–form rust species as mentioned among literature by several authors. Study on miscellaneous specimens collected from Iran and locus classicus of the species, France, revealed that P. terebinthi is an automacrocyclic rust and its aecial state is not uredinioid as formerly believed. This species has caeoma–type aecial state which differs from its Uredo–type uredinial state by having different spore ornamentation and ontogeny. The genus Pileolaria is redefined on the basis of these new findings. Moreover, all spore states of P. terebinthi, are documented using microscopy and photomicrography. New information about host range and distribution of P. terebinthi in Iran is also provided.