4 (.?) Spores predominantly 4-ceIled C. cristata 



4 {3) Spores predominantly 6-celled C. comata 



Key to Species of Didymosphaeria 



1 Ascospores dark brown, verruculose D. enalia 



1 Ascospores hyaline to light yellow, smooth D. danica 



Key to Species oi Halosphaeria 



1 Ascospores with appendages or processes in both apical and equatorial positions 2 



1 Ascospores with appendages or processes in apical positions only 



23 



