Proceedings of the American Academy of Arts and Sciences. 
Vout. XXXIV. No. 20. — May, 1899. 
ISSUED, 
MAY 19 1899 
CONTRIBUTIONS FROM THE GRAY HERBARIUM OF 
HARVARD UNIVERSITY. 
New Series. — No. XVI. 
I. Revision of the Genera Montanoa, Perymenium, and Zaluzania. 
By B. L. Rosryson and J. M. GREENMAN. 
II. Synopsis of the Genus Verbesina, with an analytical Key to the 
Species. By B. L. Rosryson and J. M. GREENMAN. 
III. Some new Species, extended Ranges, and newly noted Identities 
among the Mexican Phanerogams. By J. M. GREENMAN. 
