Vol. V. 
MAY, 1918 
No, 5 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
The geographic affinities of the vascular floras of New England, the Mari- 
time Provinces and Newfoundland M. L. Fernald 219 
The contrast in the floras of eastern and western Newfoundland. 
. M. L. Fernald 237 
Generic types with special reference to the grasses of the United States, 
A. S. Hitchcock 248 
Ax'Uary deistogenes in some American grasses. , Agnes Chase 254 
Cyrtandreae Hawaiienses,. Sect. Crotonocalyces Hillebr. . . .Joseph F. Rock 259 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
1 BY THE ■ 
BROOKLYN BOTANIC GARD.EN 
At 41 North Queen Street, Lancaster, Pa. 
Entered as second-class matter February 21, 1914, at the post office at Lancaster, Pennsylvania, 
under the act of M-arch 3, 1879. 
