Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIII. No. 25. —June, 1898. 



CONTRIBUTIONS FROM THE GRAY HERBARIUM OF 

 HARVARD UNIVERSITY. 



New Series. — No. XIV. 

 By J. M. Greenman. 



I. Revision of the Mexican and Central American Species of Galium 

 and Relbuiiium. 



II. Diagnoses of New and Critical Mexican Plianerogams. 



