Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIV. No. 20. — May, 1899. 



CONTRIBUTIONS FROM THE GRAY HERBARIUM OF 

 HARVARD UNIVERSITY. 



New Series. — No. XVI. 



I. Revision of the Genera Montanoa, Peyymenium, and Zaluzania. 

 By B. L. Robinson and J. M. Greenman. 



II. Synopsis of the Genus Verbesina, with an analytical Key to the 

 Species. By B. L. Robinson and J. M. Greenman. 



III. Some new Species, extended Ranges, and newly noted Identities 

 among the Mexican Phanerogams. By J. M. Greenman. 



