ILLINOIS BIOLOGICAL MONOGRAPHS [214 



PL.\TE VI 



Figs. 44-46 Phyllachora tiliae. 

 Fig. 44. A stroma with two locules. 

 Fig. 45. An ascus with spores. 

 Fig. 46. Two spores. 



Figs. 47-50 Phyllachora wismarensis. 

 Fig. 47. A stroma showing three locules. 

 Fig. 48. An ascus and spores. 

 Fig. 49. Two spores. 

 Fig. 50. Filiform conidia. 

 Fig. 51. Phyllachora No. 1, Diagram of stroma and locules. 



Figs. 52-54 Phyllachora No. 2. 

 Fig. 52. A perithecium showing clypeus. 

 Fig. 53. A pycnidium showing conidia. 

 F"ig. 54. .\ stroma with two locules. 



