PLANTS OF NORTH ELBA 235 



Septoria acerina Pk. 

 Living leaves of striped maple. Common. June and July. 



Septoria Saccharini E. cV E. 

 Living leaves of sugar maple. Common. August. 



LEPTOSTROMACEAE 

 Leptothyrium Periclymeni (Desm.) Sacc. 

 Living leaves of American fly honeysuckle. Wood farm. 



HYPHOMYCETEAE 



MUCEDINACEAE 



Oidium destruens Pk. 



Living leaves of black cherry. Freemans Home. June. A parasitic 

 fungus that is very^destructive to the leaves it attacks. 



Ramularia Tulasnei Sacc. 



Living leaves of strawberry. Common. June to August. This 

 fungus is a pest to cultivators of the strawberry. It produces white 

 purplish-margined spots on the leaves and destroys the vigor of the plant. 



DEM ATI ACE AE 

 Cercospora Caulophylli Pk. 



Living leaves of blue cohosh. Wood's sap works. August. 



Cercospora caricina E. & D. 



Living leaves of drooping wood sedge, Carex arctaia. Little Cherry- 

 patch pond. August. 



STILBACEAE 

 Sporocybe sphaerophila {Pk.) Sacc. 



Parasitic on black knot of wild red cherry. Head of Cascade lake and 

 Indian pass. • July. 



Isariopsis alborosella (Desm.) Sacc. 

 Parasitic on mouse ear chickweed. Freemans Home. June. 



