Forest microfungi. II. Additions to Acrodictys
The brief history of Acrodictys M. B. Ellis is reviewed and two new species from rotting bark of Populus are described and illustrated. Acrodictys fuliginosa n. sp. is characterized by non-proliferating conidiophores and obovate, shining-black conidia with three transverse and three to six longitudinal septa. In Acrodictys excentrica n. sp. a succession of variably shaped shining-black conidia is formed from the long, readily proliferating conidiophores. Conidia are typically five-celled, one of the two apparently lateral pale brown inflated cells is the recurved apical conidium cell and the other is separated from the basal conidium cell by a longitudinal septum.