U. S. .GEOGRAPHICAL SURVEYS WEST OF THE ONE HUNDREDTH MERIDIAN. 

 1s¥'Lieut. GEO. M. WHEELER, Corps of Engineers, U. S. Aemy, in ciiai:c-e. 



CHAPTER IY. 



CATALOGUE 



OP 



PLANTS COLLECTED 



IN 



NEVADA, UTAH, COLORADO, NEW MEXICO, AND ARIZONA, 



DESCRIPTIONS OF THOSE NOT CONTAINED IN GBAT'8 MANUAL OF THE NORTHERN U. S., 

 AND YOL. V, GEOLOGICAL EXPLORATION OF THE FORTIETH PARALLEL. 



J. T. ROTHROCK, 



SURGEON AND BOTANIST TO THE EXPEDITIONS OP 1873, 1874, AND 1875, 

 AND THE FOLLOWING BOTANISTS: 



SERENO WATSON, Cambridge, Mass. 

 GEORGE ENGELMANN, M. D., St. Louis, Mo. 

 Prof. THOS C. PORTER, Easton, Penn. 

 M. S. BEP.B, Fountain-dale, III. 

 WM. BOOTT, Boston, Mass. 



Prof. EDWARD TUCKERMAN, Amherst, Mass, 



GEORGE VASEY, M. D., Agricultural Depart 



went, Washington, D. C. 

 Prof. D. C. EATON, Yalf. College, New Ha 



ven, Conn. 

 THOS. P. JAMES, Cambridge, Mass. 



53 



