PEZIZALES 



59 



20. Ascocarps sessile. GORGONICEPS. 

 Ascocarps stalked. PociLLUM. 



21. Spores remaining one-celled 22. 

 Spores at length many-celled. CORYNE. 



22. Ascocarps globose, at first sessile, at length cup- shaped with a short 



stalk, small (i mm. wide). STAMMARIA. 



Ascocarps stalked from the first, clavate ; disc at length often saucer- 

 shaped, larger. OMBROPHILA. 



While many of the above genera are small, Sarcoscypha and 

 Erinella have about twenty species each, Ombrophila thirty, 

 Sclerotinia and Lachnclla each forty, Dasyscypha and Lachnum 

 each one hundred and fifty and Hymenoscypha and Helotium 

 each two hundred. These include species from the whole world. 

 The species from our own country are very imperfectly known. 



Family 5. Mollisiaceae. 



The numerous species of this family are mostly inconspicuous 

 cup fungi growing on stems, fallen leaves or, as in some species of 

 Pseudopeziza and Pyrenopeziza, parasitic on living plants; Pseudo- 

 peziza trifolii on the leaves of clover is a common and injurious 

 parasite. The genera can be distinguished as follows : 



1. Ascocarps fleshy, waxy or rarely membranous. 2. 

 Ascocarps gelatinous gristly, horny when dry. II. 



2. Ascocarps sunken in the substratum at first, at length erumpent. 3. 

 Ascocarps not sunken in the substratum. 7. 



3. Ascocarps bright colored, only slightly erumpent. 4. 

 Ascocarps dark colored, at length strongly erumpent. 5. 



4. Spores ellipsoid or elongate, rounded, one-celled. PSEUDOPEZIZA. 

 Spores becoming many celled. FABRAEA. 



5. Spores ellipsoid or fusiform one- celled. 6. 

 Spores many-celled by transverse septa. BELONIELLA. 



6. Ascocarps bristly externally and on the margin. PIROTTAEA. 

 Ascocarps externally smooth, the margin at most merely shredded. 



PYRENOPEZIZA. 



7. Ascocarps seated on an often radiate mycelium. 8. 

 Ascocarps not seated on a visible mycelium. 9. 



8. Spores elongate, often fusiform, one-celled. TAPESIA. 

 Spores filiform, many- celled. TRICHOBELONIUM. 



