Seaver: Hypocreales of North America 



51 



Spores broad-elliptical. 

 Spores very slender, allantoic! (1-2 mic. 

 broad). 

 Spores 5X2 mic. 

 Spores 6-7 X 1.5-2 mic. 

 Naked and smooth or only minutely rough. 

 Spores large, 15-22 mic. long. 



Spores allantoid ; plants parasitic 



on lichens. 



Spores fusoid or fusiform, nearly 



straight ; plants saprophytic 



Spores broad-fusoid, 7 or more 



mic. broad. 



On foliage of dead cedar ; 



spores 15 X 7 mic. 

 On bark; spores 18-22 

 X 7-10 mic. 

 Spores narrow-fusoid (4 mic. 

 broad) or fusiform. 

 Spores narrow-fusoid, 18- 



22 X 4-5 mic. 

 Spores fusiform, 18-22 

 X 5-6 mic. 

 Spores small, less than 14 mic. long 

 (mostly 7-10). 

 Perithecia sulphur-yellow-pruinose ; 



substratum yellow. 

 Perithecia not sulphur-yellow-prui- 

 nose. 

 Perithecia pale, almost white, 



becoming subtruncate. 

 Perithecia orange, fading to 

 pale yellow, not truncate. 

 Perithecia deep red, ranging in color from scarlet 

 or blood-red to reddish-purple. 

 Perithecia with a few bristly hairs ; plants on 



herbaceous stems. 

 Perithecia naked (with no well-developed hairs). 

 Perithecia conical or subconical in form. 

 Spores large, 15-17 X 5-6 mic. 

 Spores small, lo-ii X 3-4 mic. 

 Perithecia ovate ; ostiolum very obtuse. 

 Spores narrow-fusoid ; on wood. 

 Spores broad-fusoid ; on sphaeriaceous 

 fungi. 



S. A^. lactea. 



6. N. Rexiana. 



7, A', squainulosa. 



8. A^ rnbefacieiis. 



9. N. thujana. 



10. N. dispersa. 



11. A'', Eucalypt' 



12. N. Apocyni. 



13. A'', sulphurea. 



14. N. truncata. 



15. A', conigena. 



16. N. consors. 



17. A^. Papilionaceariim. 



1 8. A'^. Brassicae. 



19. A^ saiigiiinea. 



20. A', epispliaeria. 



