SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
CONTRIBUTIONS 
FROM THE 
(NITED STATES NATIONAL HERBARIUM 
VOLUME {7 
SYSTEMATIC INVESTIGATIONS 
IN 
LICHENS AND FERNS, " 
GRASSES AND OTHER PHANEROGAMS 
HASSE, MAXON, HITCHCOCK, 
HITCHCOCK anp CHASE, 
STANDLEY, COOK 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1913—1916 
