[Reprinted from Mycolooia, Vol. I., No. 5, September, 1909.] 



THE HYPOCREALES OF NORTH AMERICA— II 



Fred J. Seaver 

 (With Plate 13, Containing 15 Figures) 



Tribe II. Creonectrieae 



Conidial phase profuse, giving rise to a stroma producing at 

 first conidiophores and conidia, later perithecia; stroma fleshy, 

 depressed, tubercular or stalked, conidia variable : perithecia 

 seated on or surrounding the stroma ; usually in dense cespitose 

 clusters or occasionally scattered but always entirely superficial ; 

 perithecia and spores as in Nectrieae. 



Stroma upright, stalked, surrounded at the base by 

 the cespitose perithecia. 

 Spores I -septate. 

 Spores muriform. 

 Stroma depressed or tubercular, often concealed at 

 maturity by the perithecia. 

 Spores simple. 



Spores hyaline. 

 Spores brown. 

 Spores compound. 

 Spores I -septate. 

 Spores hyaline. 

 Spores brown. 

 Spores more than i -septate. 



Perithecia dark blue (black to naked eye). 18. Gibberella. 

 Perithecia bright colored, red, yellow, 

 etc. 

 Perithecia cespitose on a depressed 



stroma. 19. Scoleconectria. 



[Mycologia for July, 1909 (i : 131-176), was issued 22 July 1909.] 



177 



12. Sphaerostilbe. 



13. Megalonectria. 



14. Allantonectria. 



1 5. Simiakrodermatella. 



16. Creonectria. 



17. MaCBRI BELLA. 



