VOLUME 7 Part 8 
NORTH AMERICAN FLORA 
(UREDINALES) 
AECIDIACEAE (continuatio) 
JOSEPH CHARLES ARTHUR 
MICROPUCCINIA (conclusio) 
JosEPH CHARLES ARTHUR AND HERBERT SPENCER JACKSON 
PUBLISHED BY 
THE NEW YORK BOTANICAL GARDEN 
DECEMBER 20, 1922 
