during april 2013, branches of oak (quercus brantii lindl.) with fungal infection were collected from kohkiluyeh and buyer ahmad province of iran. laboratory survey indicated acervuli on the samples of oak dead twigs (3mm diameter). acervuli immersed in bark, were scattered, small (500µm), flat to subconical, 3-4 angled gray to black, hymenium labyrinthiform, pale grey, finally smeared over wit...
