Proceedings of the Boston Society of Natural History. 
Vol. 31, No. 7, 
' p. 273-313, pi. 16-19. 
TRICIIOMES OF THE ROOT IN VASCULAR CRYPTOGAMS 
AND ANGIOSPERMS. 
By Robert Greenleaf Leavitt. A. M. 
% 
41 
BOSTON: 
PRINTED FOR THE SOCIETY. 
April, 1904. 
