PLATE 6 
Sclerotinia ricini on castor bean stalks, Orlando, Fla. 
A. —Sclerotia developed on a stalk, following infection through a spur. May, 
1919. X 1/3- 
B. —Sclerotia on the surface of a stalk. Note the vigorous, healthy growth de¬ 
veloping from below the diseased region. May, 1919. X 1/3. 
% C.—Superficial and subcortical sclerotia. Note the humps produced by the latter. 
May, 1919. X 2/3. .... .... « . 
D.—An abundance of apothecia developed under natural conditions on sclerotia 
still attached to the dead stump of the host plant. July, 1919. X 3/4- 
