216 



New York Uncinulce. 



6. Uncinula Clintonii, n. sp. 



Mycelium thin, web-like, evanescent or subpersistent ; 

 conceptacles scattered, minute, .003 - .0035 inch in di- 

 ameter; appendages 10-20, a little longer than the 

 diameter of the conceptacle, straight, generally a little 

 thickened toward the tips; sporangia 4 - 6 ; spores 4-6, 

 elliptical, .0007 -.0008 inch long. Figs. 13-15. 



Both surfaces of leaves of basswood. Buffalo. G. W. 

 Clinton. Watkins. September and October. 



7. Uncinula Ampelopsidis n. sp. 



Mycelium thin, web-like, evanescent; conceptacles. 003, 

 .0035 inch in diameter; appendages 10-20, once or 

 twice as long as the diameter of the conceptacle, colored, 

 obscurely septate toward the base, the tips paler and more 

 or less coiled; sporangia 4-6; spores 4 - 6, usually 4, ellipti- 

 cal, .0007 - .0008 inch long. Figs. 16 - 18. 



Both surfaces of leaves of the woodbine. Common 

 August to October. 



The colored appendages easily separate this species from 

 all the preceding. 



Note. — The specimens of U. Torreyi were received too 

 late to be conveniently figured. Two other species, U. 

 Americana on leaves of grape vines and U. lueulenta on 

 leaves of poplars, are credited to our flora by E. C. Howe 

 M. D. I regret that, from the lack of specimens, I have 

 not been able to include these in the present synopsis. 



