Vol. IX. 
FEBRUARY, 1922 
No. 2 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
The growth of field corn as affected by iron and aluminum salts 
Charles Homer Arndt 47 
Control of the sexual state in Arisaema triphyllum and Arisaema Dracontium 
John H. ScHAFFNER 72 
A demonstration of numerous distinct strains within the nominal 
talozzia Guepini Desm Carl D. La Rue and H/IixVK'artlett 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At 41 North Queen Street, Lancaster, Pa. 
Eutared as seoond-claw matter February 21, 1914, at the post offic* at Lancaster, Pennsylvania, 
under the act of March 3, 1879 
