SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



CONTRIBUTIONS 



FROM THE 



Mm States National lliiRBARiiiM 



Volume 2\ Part 



TREES AND SHRUBS OF MEXICO 



(GLEICHENIACEAE-BETULACHAH) 



By PAUL C. STANDLEY 



•<iv. 







WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1920 



