Proceedings of the American Academy of Arts and Sciences. 

 Vol. XL. No. 1.-July, 190i. 



CONTRIBUTIONS FROM THE GRAY HERBARIUM OF 

 HARVARD UNIVERSITY. 



New Series. — No. XXVIII. 



I. Revision of the Genus Sabazia. By B. L. Robinson and J. M. 

 Greenman. 



II. Revision of the Mexican and Central American Species of Trixis. 

 By B. L. RoBiNSON-and J. M. Greenman. 



III. Revision of the Mexican and Central American Species of Hlera- 



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



IV. Synopsis of the Mexican and Central American Species of Altins. 



By M. L. Fernald. 



V. Diagnoses and Synonymy of Mexican and Central American 

 Spermatophytes. By J. M. Greenman. 



VI. Some New Species of Mexican and Nicaraguau Dicotyledons. By 

 M. L. Fernald. 



