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A Monthly Journal of Botany 
Edited and Published by A. A. Heller 
i Entered as second-class matter November 24, 1998, at the post office at 
Reno, Nevada, under the Act of Congress of 
March 3, 1879. 
CONTENTS: 
‘Aspects of the Species Question’’— Concluded: A. A. Heller IOI 
The Colorado Conioselinum: George E. Osterhout 108 
The Passing of the Prairie Plants in the Grain-producing 
Middle West: J. Lunell 109 
Index TL2 
Reno, Nevada 
