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The morphology of the anamorphic hornbeam powdery mildew fungus Oidium carpini on Carpinus betulus is re-examined using light microscopy. All morphological features were documented by line drawings The conidiophore length is very variable and depends on which side of the leaf the conidiophores are formed. This variability is discussed with respect to the morpho-taxonomic value of conidiophore length and identification of anamorphic Erysiphales species. Furthermore, we report this species for the first time from Iran.
Lecanora panis-erucae HERTEL & V. WIRTH, a lichen almost exclusively grazed by the larvae of an unidentified moth, is described as a new species. Lecanora substylosa (losa (losa ZAHLBR.) HERTEl & V. WIRTH comb. nova (basionym:
Lecidea substylosa NYL.), a relative of Lecanora sulphurella HEPP differing by its chemistry, hitherto known only from its type collection, is reported from numerous localities. Lecidella placodina (Lecidella placodina (Lecidella placodina NYL.) HERTEL, previously known only from its type locality in the Angolan part of the Namib Desert, is reported from other localities in
Namibia. Lecidea quartzina STIZ., judged to be a close relative of L. tragorum ZAHLBR., and hitherto known only from its type locality in the Cape Province of South Africa, is reported as new to Namibia. Lecidea sarcogynoides, also hitherto unrecorded for Namibia is reported from a number of localities.