ASCOMYCETES 



4 Ascocarps springing from a sclerotium. SCLEROTINIA. 



Ascocarps not springing from a sclerotium. 5. 



5. Spores one-celled. 6. 

 Spores at length 2-4-celled. RUTSTROEMIA. 



6. Substratum colored green. CHLOROSPLENIUM. 

 Substratum uncolored. CIBORIA.* 



7. Ascocarps hairy externally. 8. 

 Ascocarps naked. 15. 



8. Ascomata resting on an extended arachnoid mycelium. 9. 

 Ascomata without arachnoid mycelium. IO. 



9. Spores remaining one-celled. ERIOPEZIZA. 

 Spores becoming several celled. ARACHNOPEZIZA. 



10. Spores globose. LACHNELLULA. 

 Spores ellipsoid or elongate. II. 



11. Disc surrounded with black hairs. DESMAZIERELLA. 

 Disc smooth. 12. 



12. Paraphyses obtuse at the apex. 13. 

 Paraphyses lancet-shaped at the apex. 14. 



13. Walls of ascoma delicate ; spores mostly one-celled, sometimes two- 



celled at maturity. DASYSCYPHA. 

 Walls of ascoma thick ; spores two-celled at maturity. LACHNELLA. 



14. Spores remaining one-celled. LACHNUM. 

 Spores at length several-celled. ERINELLA. 



15. Spores globose. PITYA. 

 Spores ellipsoid or fusiform. 16. 

 Spores filiform. 20. 



16. Spores remaining one-celled. 17. 

 Spores at length two-four-celled. 18. 



17. Border of disc smooth. HYMENOSCYPHA. f 

 Border of disc toothed. CYATHICULA. 



1 8. Ascocarps sessile, rarely compressed at base. BELONIUM. 

 Ascocarps stalked, or at least compressed like a stalk. 9. 



19. W T alls of ascoma waxy ; stem short and delicate. BELONIOSCYPHA. 

 Walls of ascoma waxy, thick ; stem thick. HELOTIUM. 



:< - Some species of Pilocratera may also be sought here, 

 f Some forms of Hclotium may be sought here. 



