CONTRIBUTIONS FROM THE GRAY HERBARIUM 

 OF HARVARD UNIVERSITY 



New Series. No. XL VII 



A REVISION OF THE GENUS POLYGALA 



IN MEXICO, CENTRAL AMERICA, 



AND THE WEST INDIES 



By S, F. BLAKE 



HARVARD UNIVERSITY PRESS 



CAMBRIDGE, MASS., V. S. A 

 August, 1910 



lS 



