PLATE 26. 



Cucurbitarieae. 



Fig. 1. Cucurbitaria Fraxini, E. & E. natural size, on dead asl 

 limb. 



" 2. Portion of same somewhat enlarged. 



" 3. Sectional view through the center of a cluster of perithe- 

 cia. 



" 4. An ascus. 



" 5. A sporidium. 



" 6. Gibbera Vaccinii, (Sow.) natural size, on Vaccinium twig, 



" 7. A cluster of peri thecia somewhat enlarged. 



" 8. An ascus. 



" 9. A sporidium. 



" 10. Otthia hypoxyloides, E. & E. natural size on dead wood. 



" 11. A cluster of perithecia enlarged. 



" 12. An ascus. 



" 13. A sporidium. 



" 14. Nitschkia cupularis, (Pers.) natural size on dead limb of 

 horse chestnut. 



" 15. A cluster of perithecia somewhat enlarged. 



" 16. An ascus. 



" 17. Two sporidia. 



