PLATE 39. 



Xylarieae. 



Fig. 1. Xylaria subterranea, (Schw.) natural size on wood of ar 

 old pump standing in a well at Bethlehem, -Pa. 



" 2. Sectional view of a piece of the stroma somewhat enlarged. 



" 3. An ascus. * 



" 4. Two sporidia. 



" 5. Ustulina vulgaris, Tul. natural size. 



" 6. Portion of stroma enlarged. 



" 7. Part of an ascus containing six sporidia. 



" 8. A sporidium. 



" 9. Nnmninlaria discreta, (Schw.) natural size on wood of 

 "Mountain ash." 



" 10. Sectional view of enlarged stroma. 



" 11. An ascus with two paraphyses. 



" 12, A sporidium. 



" 13. Poronia leporina, E. & E. natural size on rabbit's dung 

 (Missouri). 



" 14. Sectional view of a stipitate stroma. 



" 15. An ascus with three jointed paraphyses. 



" 16. Two sporidia. 



