THE BRYOLOGIST 
AN ILLUSTRATED BIMONTHLY 
DEVOTED TO 
NORTH AMERICAN MOSSES 
HEPATICS AND LICHENS 
VOLUME XVIII 
O. E. JENNINGS, Ph. D., Editor-in-Chief 
Associate Editors 
ABEL JOEL GROUT, Ph.D, 
GEORGE N. BEST, M.D. JOHN M, HOLZINGER, M.S. 
ALEXANDER W. EVANS, Ph.D. LINCOLN W. RIDDLE, Ph.D. 
and the 
Advisory Board Officers of the Society 
1915 
