CONTRIBUTIONS FROM THE GRAY HERBARIUM 
OF HARVARD. UNIVERSITY. 
NEw Serres, No. Til. 
ADDITIONS 
TO THE 
PHASNOGAMIC FLORA OF MEXICO, 
DISCOVERED BY. C. G. PRINGLE IN. 1891-92. 
By B. L. ROBINSON anv H. E. SEATON. 
Fkom tHE Procerpines oF THE AMERICAN ACADEMY OF ARTS AND SCIENCES, 
Vou. XXVIII. 
[Issvep May 13, 1893.} 
