AMPHISPHAERIEAE. 



A Perithecia not collapsing. 



Sporidia elliptical, or oblong, uniaeptate, 



brown. - Amphisphaeria. 



Sporidia oblong or fusoid, 3-or more-septate, 



brown. - - - Trematosphaeria. 



Sporidia subelliptical, uniseptate. brown, with a 



snout like (often 1-3-septate) prolongation 



at each end. - - - Caryospora. 



Sporidia 3-septate, separating in the middle, brown. Ohleria. 

 B Perithecia often collapsing. 



Sporidia 2-or more-septate, hyaline. Winteria. 



Sporidia muriform, brown. Teichospora. 



LOPHIOSTOMEAE, 



Sporidia oblong or subfusoid, Imultiseptate, hyaline 



or brown. - • Lophiostoma- 



Sporidia ovate or oblong, brown, muriform. - Lophidium. 

 Sporidia vermicular or filiform, septate, subhy aline. Lophionema. 

 cucurbitarieae. 



A. Perithecia mostly cespitose. 



Sporidia muriform, brown. • Cucurbitaria. 



Sporidia continuous, short cylindrical, hyaline. Nitschkia. 

 Sporidia continuous ovoid, elliptical, or oblong, 



hyaline. - - ■ Wallrothiella. 

 Sporidia continuous oblong or allantoid, subhyaline, 



more than 8 in an ascus. Fracchiaea- 



Sporidia oblong-elliptical, uniseptate, subhyaline. Oibhera. 



B, Perithecia gregarious. 



Sporidia short-cylindrical, continuous, hyaline. Coelosphaeria. 

 Sporidia elliptical or fusoid, uniseptate, brown &r 



yellowish-brown, lignicolous. Otthia. 



Sporidia subelliptical, uniseptate, brown. Parodiella. 



Sporidia subfusoid, 3-septate, brownish. - Montagnella. 



Perithecia subelliptical, uniseptate, brown. Parodiella- 



SPHAERELLEAE. 



A. Paraphyses present. 



Sporidia elliptical, continuous, hyaline. - Physalospora. 



Sporidia subelliptical, yellowish-hyaline, unequally, 



uniseptate. 7 • Stigmatea. 



