U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF BOTANY. 



CONTRIBUTIONS 



THE U. S. NATIONAL HERBARIUM. 



Vol. V, No. 5. 

 iswtjp:i:> ^vuc^us'r i, looo. 



THE PLANT COVERING OF OCRACOKE ISLAND; A STUDY 

 IN THE ECOLOGY OF THE NORTH CARO- 

 LINA STRAND VEGETATION. 



THOMAS PI. KEAKNKY. JR. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 190 0. 



