Seaver: The Hypocreales of Xorth America 189 



Distribution : Vermont to N. Dakota and W. Virginia, prob- 

 ably extending over a much wider range. 



Illustrations : Pers. Ic. & Descr., pi. 12, f. 2. 



ExsiccATi: Ellis, N. Am. Fmigi, 161; Ellis & Everh. N. Am. 

 Fungi, 618; E. Barholomevv, Fungi Columbiani, -?o^j, 22^8. 

 Other specimens examined: New York, Clinton, Seaver; N. 

 Dakota, Seaver; N. Jersey, Ellis; Ontario, Canada, Dearness; 

 Vermont, Burt, Ortoii; W. Virginia, ^(irfan. 



So far as we can see the species scarcely differs from Nectria 

 ditissima Tul. If the two species are distinct, the characters 

 are so poorly understood that they have been badly confused. 

 The specimens examined which have been referred to these two 

 names are identical. 



9. Creonectria nipigonensis (Ellis & Everh.) 

 Nectria nipigonensis Ellis & Everh. Proc. Acad. Nat. Sci. Phil. 



1893: 129. 1893. 



Stroma depressed, yellowish, about .5 mm. in diameter ; conidia 

 minute, allantoid, 3-4 X i mic. ; perithecia cespitose, nearly 

 globose, about 250 mic. in diameter, reddish becoming darker 

 with age, finally collapsing at the apex, smooth ; asci cylindrical, 

 8-spored, 50-55 X 6-7 mic. ; spores i-seriate, fusoid or occasion- 

 ally subelliptical, i -septate, usually not constricted at the septum. 



On the erumpent disc of Diatrypella. 



Type locality : Lake Nipigon, Canada. 



Distribution : Known only from type locality. 



Specimens examined: Canada, Macoun (type). 



Distinguished by the pezizoid perithecia and broad- fusoid 



spores. 



10. Creonectria Cucurbitula (Sacc.) 



Nectria Cucurbitula Sacc. Michelia i : 409. 1878. Not N. Cu- 

 curbitula (Tode) Fr. 



Perithecial clusters erumpent and often very irregular in form, 

 1-2 mm. in diameter, consisting of numerous densely cespitose 

 perithecia ; individual perithecia bright red later becoming red- 

 dish-purple, ovate with a prominent rather obtuse ostiolum, entire 

 or very rarely collapsing; asci cylindrical or clavate, 75-100 X 

 6-8 mic, 8-spored ; spores at first crowded and partially 2-seriate, 

 finally becoming i-seriate, obliquely arranged with ends over- 



