Explanation of Plate II. 



Fig. I. ExoAscus purpurascexs (Ell. & Ever.) Sadeb. on leaves of Rhus 



copal Una Linn. 

 Fig. 2. ExoAscus amextorlm Sadeb. on fertile catkins of Alnus incana 



Willd. 

 Fig. 3. ExoASCus BACTERiosPERMUs (Johans.) .Sadeb. on leaves of Betula 



glandulosa Michx. 

 Fig. 4. Taphrina aurea (Pers.) Fries on leaves of PopuUis certinensis. 



