CONTRIBUTIONS FROM THE GRAY HERBARIUM 
OF HARVARD UNIVERSITY. 
NEw SERIEs, No. V. 
THE NORTH AMERICAN SILENEAD AND 
POLYCARPE. 
By B. L. ROBINSON. 
Mo. Bot. Garden, 
1893 
From THE PROCEEDINGS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES, 
Vou. XXVIII. 
{Issurp June 22, 1893.] 
