C. a{ } ^H«-W-»^ 



U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF BOTANY. 



CONTRIBUTIONS 



FROM 



THE U. S. NATIONAL HERBARIUM. 



Vol. IV. 

 ISSUED NOVEMBER 29, 1893. 



BOTANY OF THE DEATH VALLEY EXPEDITION. 



A REPORT ON THE BOTANY OF THE EXPEDITION SENT OUT 



IN 11191 MY THE U. S. DEPARTMENT OF AGRICULTURE 



TO MAKE A BIOLOGICAL SURVEY OF THE REGION 



OF DEATH VALLEY, CALIFORNIA. 



BY 



FREDERICK VERNON COVILLE, 

 Botanist of the Death Valley Expedition. 



PUBLISHED BY AUTHORITY OP THE SECRETARY OF AGRICULTURE. 







WASHINGTON: 



GOVERNMENT PRINTING OFFICE 



1893. 



