65 



surrounded by an elevated margin and a brownish-red border; 

 spores at length with one or two septa. 



MACROSPORIUM TOMATO, Cke. 

 Decaying fruit of tomato. Menands. October. 

 PILACRE ORIENTALIS, B. & Br. 



Dead bark of alders, Alims incana. Elizabethtown. September 

 In our specimens the sporiferous branches are sometimes elon- 

 gated and flexuous and the young plant wholly white, in which 

 respects the}^ differ from the typical form of the species. But the 

 stem soon becomes cinereous and finally the whole plant is imiber- 

 brown. Young plants sometimes grow from the base of old ones, 

 sometimes from the head. 



GRAPHIUM SORBI, N. sp. 



Spots generally small, one or two lines broad, orbicular, definite, 

 reddish -brown ; stems hypophyllous, rather stout, equal or slightly 

 tapering upward, the component flocci diverging and colorless at 

 the apex; spores oblong, hyaline, .0008 to .001 inch long, .00025 

 to .0008 broad, sometimes with two to four minute nuclei. 



Living leaves of mountain ash, Pyrus Americana. Adirondack 

 mountains. July. 



ISARIOPSIS ALBOROSELLA, Sacc. 



Living or languishing leaves of chickweed, Cerastiiim vidgatiim. 

 Keene. July. 



I find only uniseptate spores in our specimens. 



FUSARIUM LYCOPERSICI, Sacc. 



Fruit of the tomato. Menands. August. 



A malady affects the fruit of the tomato. In the vicinity of 

 Albany, the past season, the first ripening tomatoes were found 

 almost invariably to be soft and decaying. A brown or discolored 

 spot, usually located at the flowering end of the fruit, appears to 

 be the origin and center of the disease. This spot often makes its 

 appearance while the fruit is yet green. This Fusarium soon 

 develops on this spot, appearing in the form of minute pallid dots, 

 or in more effused patches which are of a pinkish or an orange 

 hue. With advancing age it assumes a more or less brownish hue. 

 If the affected tomato be cut open its inner flesh often exhibits a 



