Sporidia more or less distinctly muriform, brown. Pleomassaria. 

 Sporidia as in Massariella, but perithecia 



circinate. • - Massariovaha. 



CLYPEOSPHAERIEAE. 



Sporidia ovate-oblong, continuous, subhyaline. Trabutia. 



Sporidia ovoid or oblong continuous, brown. Antho&tomella. 



Sporidia oblong cylindrical, 1-3-septate, brown. Clypeohphaeria. 



Sporidia fusoid, 1-3-septate, hyaline. Hypospila. 



Sporidia filiform, hyaline. - Linospora. 



Sporidia short fusoid, muriform (toliicolous.) Isothea. 

 Sporidia subelliptical, muriform, hyaline or brown 



(lignicolous ) - • Thyridium. 



VALSEAE. 



k. Sporidia allantoid, continnons, Iiyaline or subhyaline, asci mostly 

 8-spored. 



* Stroma convex or conical, sunk in the matrix with only the 



apex erumpent. 

 Ostiola smooth, sporidia hyaline. ■ Valsa. 



Ostiola sulcate, sporidia yellowish. Eutypella. 



Perithecia circinate, asci polysporous. Valsella. 



** Stroma effused. 

 Perithecia scattered in an effused or subpulvinate 



stroma, sporidia hyaline. - Eutypa. 



Perithecia scattered or subcircinate in a (mostly) 



cortical stroma, sporidia yellowish. Cryptovalsa. 



*** Stroma wanting. 

 Perithecia circinate on the surface of the inner 



bark. ■ - - Calosphaeria. 



Perithecia as in Calosphaeria, asci polysporous. Coronophora. 

 Perithecia and sporidia as in Eutypa, but stroma 



none. Cryptosphaeria. 



B. Sporidia lor more-septate. 



* Stroma convex, conical or effused. 



Sporidia uniseptate, hyaline. - Diaporthe. 



** Stroma wanting. 



Perithecia buried, subcircinate or scattered, sporidia 



1-3-septate, brown. - Endoxyla. 



MELANCONIDEAE. , 



Sporidia uniseptate, hyaline or colored. Melanconis. 



