PLATE 41 



Cucurbitarieae. 



Fig. 1. Montagiiella Heliopsidis, (rfchw.) natural size, on stem and 

 leaf of Helianthus divaricatus, somewhat enlarged. 



2. Same on a piece of the stem, still more enlarged. 



3. Vertical section through several perithecia. 



4. An ascus. 



5. A sporidium, front view. 



6. A sporidium. side view. 



7. Parodiella grammodes, (Kze.) about natural size, on 



D esmodium paniculatum. 



8. Fragment of leaf with enlarged perithecia. 



9. Vertical section of a perithecium more highly magnified. 



10. An ascus. 



11. Front view of a sporidium. 



] 2. Ottilia staphylina, E. & E. about natural size, on bark of 

 Staphylea. 



13. A cluster of perithecia somewhat magnified. 



14. Vertical section through a cluster more highly magnified. 



15. An ascus. 



16. Four sporidia. 



-In this and the preceding plates, where not otherwise noted, 

 all asci drawn to a scale of 28 p. to the inch and all enlarged sporidia 

 to a scale of 14 p. to the inch. 



