PLATE 40. 



Dotbideaceae. 



Fig. 1. Dothidea Montaniensis, E. & E. several stromata somewhat 

 enlarged, on bark of Bigelovia ? 



" 2. Vertical section of a stroma. 



3. An ascus. 



" 4. A sporidium. 



" 5. Phyllachora graminis, (Pers.) somewhat enlarged, on leaf 

 of grass. 



" 6. Vertical section of the same. 



" 7. An ascus. 



8. A sporidium. 



" 9. Homostegia Kelseyi, E. & E. somewhat enlarged on dead 

 stem of Ribes rotundifoliuvi. 



" 10. Vertical section through a stroma. 



" 11. An ascus. 



" 12. Two sporidia. 



" 13. Rhopographus filicinns, (Fr.), somewhat enlarged, on 

 Pteris aquilina. 



" 14. Vertical section of the same. 



" 15. An ascus. 



" 16. Two sporidia. 



