PLATE IV. 



FlG. I. Limacinia ? alaskensis Sacc. & Seal, a, fungus, X I 5 * c , hyphse ; d, 

 conidium ; e, perithecia aucta ; f, asci immaturi. 



2. Hypoxylon ohiense Ell. & Everh. a, fungus sectus, X * > ^> ascus; c, 

 sporidia. 



3. Lcestadia saxifrages Sacc. & Seal, a, fungus, X J ! *> perithecium sec- 

 turn ; c, asci ; </, sporidia. 



4. Physalospora borealis Sacc. & Seal, a, fungus, X ! > *. perithecia 

 aucta ; c, ascus ; d, sporidia. 



5. Sphcerella graminum Sacc. & Seal, a, fungus, X * 5 ^ perithecium 

 auctum ; c, asci ; d, sporidia. 



6. Sphcerella grossularice salicella Sacc. & Seal, a, fungus, X i ! *> 

 perithecium auctum; c, ascus; </, sporidia. (In folio salicino adest 

 quoque Rhytisma salicinum.) 



7. Sphcerella leptospora Sacc. & Seal, a, fungus, X i i * perithecium 

 auctum ; c, asci ; </, sporidia. 



8. Venturia kunzet ramicola Sacc. & Seal, a, fungus, X J i ^> perithecia 

 aucta ; c, setula perithecii ; d, ascus ; e, sporidia. 



9. Didymosphceria arenaria macrospora Sacc. & Seal. a, fungus, X * ! 

 3, perithecium auctum ; c, ascus ; d, sporidia. 



(58) 



