Vol. II 
JANUARY, 1915 
No. 1 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
Investigations on the phytogeny of the Angiospenns. 5. Foliar evi- 
dence as to the ancestry and early climatic environment of the 
Angiosperms. Edmund W. Sinnott and Irving W. Bailey i 
The growth-forms of the flora of New York and vicinity.* 
Norman Taylor 23 
The temperature of leaves of Pinus in winter. . . .John H. Ehlers 32 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At 41 North Queen Street, Lancaster, Pa. 
Entered as secoad-class matter February 21, 19 14. the post office at Lancaster, Pannsylvania, 
under the act of March 3, 1879. 
