fT: 
spring following) these branches, though often nearly leafless, flower 
very profusely and continue blooming for ten days to three weeks 
after the normal period of flowering has passed. Unlike the lemon, 
the flowering season of the orange is very definite, and usually is 
not longer than two weeks. This profuse and late bloom consists 
of small flowers, which almost never set fruit. In fact, very little 
fruit is produced by a tree after it is attacked by blight. Trees bear- 
ing a full crop may sometimes be attacked late in summer and 
Fic. 1.—Orange blight on common sweet orange (C. aurantiwm); diseased and healthy branches from 
adjoining trees. Photographed May, 1894, while attached. 
mature their fruit, but it is only in case of late attacks that any consider- 
able amount of fruit can be seen on diseased trees. Fruit borne by 
blighted trees is usually undersized, but otherwise is apparently normal. 
The contrast in the amount of fruit produced by trees attacked by 
blight and- those affected with mal-di-gomma is very striking, trees 
suffering from the latter disease often bearing an unusually heavy 
crop. 
In very severe cases of blight the trees succumb so suddenly that 
the leaves do not fall, but simply wither and turn brown on the twigs. 
