6 {/) Spores without a sheath L. alhnpunctata 





7 (6) Ascospores 4- or 5-celled, hyahne, penultimate eel! 

 usually largest; sheath thick, to 11 p 



L. contecta 



7 (6) Ascospores 4- to 6-celled, yellow to yellow-brown, 



midcells largest, sheath thin L. maritima 



Key to Species of Sphaerulina 



Ascospores 4-celled, to 36 n long, fusoid, both ends rounded 



. S. oraemaris 



Ascospores 4- to 6-celled, to 54 /j long, elongate-pyriform 

 one end-cell rounded, the other attenuate and curved . . 



