MYCOTAXON ISSN (print) 0093-4666 (online) 2154-8889 Mycotaxon, Ltd. ©2017 October–December 2017—Volume 132, pp. 885–893 https://doi.org/10.5248/132.885 A contribution to the study of Helotiales and Rhytismatales in Turkey Makbule Erdoğdu 1* , Gökhan Doğan 1 , Elşad Hüseyin 1 & Zekiye Suludere 2 1 Ahi Evran University, Faculty of Science and Literature, Department of Biology, Bağbaşı, Kırşehir, Turkey 2 Gazi University, Faculty of Science, Department of Biology, Teknikokullar, Ankara, Turkey * Correspondence to: merdogdu@ahievran.edu.tr Abstract—Naemacyclus fimbriatus, Lophodermium juniperinum, and Marssonina daphnes have recently been discovered in Turkey. is is the first record of Naemacyclus from Turkey. Morphological data obtained by light and scanning electron microscopy of these fungi are presented. Key words—acervular anamorph, Ascomycota, new host, new records, SEM Introduction Rhytismatales are an order of endophytic, parasitic, or saprotrophic fungi in Leotiomycetes (Ascomycota), the inoperculate discomycetes. Especially common on conifers, grasses and members of Ericaceae, they are also found on other vascular plants. e species disperse by ascospores and at least in temperate regions usually infect their hosts in spring/summer to develop fruiting bodies the next year on dead material (Lantz et al. 2011). e order includes plant parasitic fungi causing serious needle cast, such as Lophodermium seditiosum Minter et al. on Pinus sylvestris (Minter 1981b)., Rhytismatalean fungi the members of Rhytismatales are poorly known in Turkey and have not been yet intensively studied. Within Leotiomycetes, Helotiales represents the largest order of inoperculate discomycetes—an ecologically and morphologically highly diverse group of