VOLUME 7 PART 6 
NORTH AMERICAN FLORA 
(UREDINALES) 
AECIDIACEAE (continuatio) 
JosEPH CHARLES ARTHUR 
DICAEOMA ON CARDUACEAE 
JosepH CHARLES ARTHUR AND HERBERT SPENCER JACKSON 
ALLODUS 
JosEPH CHARLES ARTHUR AND CLAYTON ROBERTS ORTON 
PUBLISHED BY 
THE NEW YORK BOTANICAL GARDEN 
FEBRUARY 8, 1921 
