Proceedings of the American Academy of Arts and Sciences. 
Vout. XLVII. No. 6.—Juty, 1911. 
ISSUED, 
JUL 25 1911 
CONTRIBUTIONS FROM THE GRAY HERBARIUM 
OF HARVARD UNIVERSITY. 
New Series. — No. XXXIX. 
By B. L. Rosrnson. 
I. On the Classification of certain Hupatorieae. 
II. Revision of the Genus Barroetea. 
III. On some hitherto undescribed or misplaced Compositae. 
