Clado; 
A. —Jet black, stem-end discoloration of green tomato fruit, caused by Claiosporium fulvum Cke. 
Margin is sharply defined. Infection occurs through stomata in the sepal, torus, or pedicel, and 
the fungus eventually grows down into the fruit 
B. —Sunken, black, stem-end lesion on young tomato fruit 
C. —Extensive blackening of the stem end of a green tomato. Margin sharply defined 
D. —Collar of black lesions about the Shoulder of the fruit more or less equidistant from the stem 
end. There is also some blackening about the torus. The mycelium can be traced back from 
such lesions to the torus 
E. —Blackened lesion at one side of the stem end showing black dots under the epidermis and a 
feathery margin. The original infection probably occurred on one of the sepals on the side now 
showing the fruit discoloration 
F—Blackening of the stem end of a red fruit. The margin of the lesion is diffuse 
