Vol. II 
APRIL, 1915 
No. 4 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
A three<>salt nutrient solution for plants. .............. .John W. Shive 157 
Preliminary note on the morphology of Gnetum W. P. Thompson 161 
The persistence of viable pycnospores of the chestnut blight fungus on 
normal bark below lesions. . R. A, Studhalter and F. D. Heald 162 
A taxonomic study of Setaria italica and its immediate allies. 
F. Tracy Hubbard 169 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At 41 North Queen Street, Lancaster, Pa. 
Entered aa second-class matter February ai, 1914. at the post office at ] 
under the act of Marcli 3. 1879. 
Lfanc^ater, Pennaylvanis 
I, 
