EXPLANATION OF PLATES. 



Plate I. 

 Lachnea setosa 



Fig. 1 — apothecium, natural size 

 " 2 — structure of apothecia, X 55 

 " 3 — hair from outside of cup, X 55 

 " 4 — paraphysis, X 200 

 " 5 — ascus, X 200 



'.' 6 — spore somewhat immature, X 200 

 " 7 — mature spores, X 200 



Pustularia stevensoniana 



Fig. 8 — apothecium, natural size 

 " 9 — structure of apothecia, X 45 

 " 10 — paraphysis, X 325 

 " 11 — ascus, X 325 

 " 12 — spores, X 325 



Pl.'^te II. 

 Ascobolus atrofuscus 



Fig. 1 • — ■ apothecium, X 2 

 " 2, 3, and 4 — Sterile part of apothecium, X 325 

 " 5 — paraphysis, X 325 

 " 6 — ascus closed, X 325 

 " 7 — ascus with operculum removed, X 325 

 " 8 — mature spores, X 325 



Pl.\te III. 

 Arachnopeziza aurclia 



Fig. 1 — apothecium, X 2 

 " 2 — paraphyses, X 325 

 " 3 — ascus, X 325 

 " 4 — spores, X 325 



Sclerotinia tuberosa 



Fig. 6 — mature apothecium and sclerotium, natural size 

 " 7 — younger stages, natural size 

 " 8 — paraphysis, X 325 

 " 9 — ascus, X 325 

 " 10 — spores, X 325 



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