PLATE IV. 



FlG. I. Limacinia ? alaskensts Sacc. & Seal, a, fungus, X * 5 ^> c i hjphae ; d, 

 conidium ; e, perithecia aucta ; _/J asci immaturi. 



2. Hypoxylon ohiense Ell. & Everh. a, fungus sectus, X J 5 ^> ascus; c, 

 sporidia. 



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

 turn ; c, asci ; </, sporidia. 



4. Physalospora borealis Sacc. & Seal. <z, fungus, X 1 5 * perithecia 

 aucta ; c, ascus ; <?, sporidia. 



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

 auctum ; c, asci ; </, sporidia. 



6. Spharella grossularice salicella Sacc. & Seal, a, fungus, X J ^> 

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

 quoque Rhytisma saltcinum.} 



7. Sphcerella leptospora Sacc. & Seal. <z, fungus, X i 5 ^> perithecium 

 auctum ; c, asci ; ef, sporidia. 



8. Venturia kunzei ramicola Sacc. & Seal. <z, fungus, X J > ^> perithecia 

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



9. Didymosphceria arenaria macrospora Sacc. & Seal. a, fungus, X J 5 

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



(58) 



