\V) 
Bulletin 255 
January, 1920 
The Agricultural Experiment Station 
OF THE 
Colorado Agricultural College 
WHORLED MILKWEED 
The Worst Stock-Poisoning Plant 
in Colorado 
By W, L. MAY, Assistant Botanist 
A bad patch of milkweed on a rocky hillside just 
below an irrigation ditch. 
PUBLISHED BY THE EXPERIMENT STATION 
iFORT COLLINS. COLORADO 
19 2 0 
