106 



Mycologia 



Greenish, spores colored, 



greenish-brown. 20. Phaeopezia. 



Small, not exceeding 2 mm. 

 in diameter. 

 Plants disc-like, on 



leaves, wood, etc. 21. Mollisia. 



Plants forming spots on 



leaves, alfalfa, etc. 22. Pseudopeziza. 

 Substance hard, forming black 

 discs on wood, etc. 

 Spores with transverse 

 septa only. 

 Spores i-septate, brown- 

 ish. 2*3. 

 Spores more than 1- 

 septate, colorless. 

 Spores filiform, break- 

 ing into joints. 24. 

 Spores not filiform. 25. 

 Spores muriform. 26. 

 Plants formed below the epidermis and 

 bursting through usually in clusters. 

 Plants medium, 3 or more mm., 



Karsc 



Bactrospora. 



Patellaria. 



Blitrydium. 



27. 



mostly disc- 



usually cup-shaped. 

 Plants small, 1-2 mm 

 shaped. 



3. Phacidiineae 

 Plants forming light-colored linear patches on old 



wood, etc. 



4. Hysteriineae 

 Plants almost entirely superficial. 



Lips spreading so that the plants become sub- 

 patellate. 



Lips tightly closed or only slightly spreading. 



Spores muriform, with transverse and longi- 

 tudinal septa. 

 Spores colored brown. 31 

 Spores colorless. 32 

 Spores i-septate, colorless. 33 

 Plants submerged, surface even with surface of sub- 

 stratum. 34 



Cenangium. 



28. Dermatea. 



29. Propolis. 



30. Hysteropatella. 



Hysterographium. 



Gloniopsis. 



Glonium. 



Hypoderma. 



1. HELVELLINEAE 



I. MORCHELLA 



Morchella esculenta (L.) Pers. A species well known by 

 its stipitate, subglobose, deeply-pitted head. Commonly classed 

 with the mushrooms and much valued for its edible qualities. 



