ELISHA MITCHELL .SCIENTIFIC SOCTE'J'Y 



71 



longer ones irregularly dichotomous, tips sometimes eiilarge<l, 

 sometimes irregularly lobed. Asci four to twelve, ovate to ellip- 

 tical, pedicellate. Spores four to six. 



On Euphorbia (several species), Ciiapel Hill, N. C, autumn, 

 1885, 628; Auburn, Ala., November, 1889, ]()23; June, 1890, 

 1143. This species is quite common throughout the greater part 

 of the year. I have collected it maturing its fruit in January. 



M. Van Bruntiana Ger. 



Syn. M. Alni Burrill, Bull. 111. State Lab. Nat. Hist., Vol. 

 II, Parasitic Fungi of III., p. 421 (in part). 



M. Van. Bruntiana Ger. Torr. Bull., Vol. VI, p. 31. 



Amphigenous; mycelium abundant, rather thin and covering 

 large part of the leaf surface, or in spots, persistent. Perithecia 

 numerous, scattered or subgregarious, 90-100, reticulations dis- 

 tinct. 



Appendages ten to sixteen, 

 about equal to diameter of the 

 peritheciuni or little longer, rough, 

 slightly colored at base, stout, sev- 

 eral times dichotomous, tips long 

 and flexuous. or short and blount, 

 sometimes toothed, never recurved. 

 Asci four to five, 35-40x50-60, 

 ovate, pedicellate. Spores four to 

 eight, 18-20. 



On SambuGus Canadensis, Blowing Rock, Watauga county, 

 N. C., August, 1888, 615. 



M. Alni (D C.) Winter. 



Amphigenous, or epiphyllous; mycelium abundant and per- 

 sistent or thin and evanescent. Perithecia numerous, scattered, 

 small, 80-100, black, reticulations rather distincr. Append- 

 ages eight to fifteen, one to two times diameter of peritheciuni, 

 colored toward base, four to five times regularly dichotomous, 

 tips incurved when mature. Asci four to five, oval, 30-45 x 

 50-70, pedicellate. Spores six to eight, about 20. 



On Castanea sativa, Blowing Rock, Watauga county, N. C, 



