TABLE OF CONTENTS. 



Page. 

 Letter op Lieutenant Wheeler to General Humphreys xin 



Chapter I. — Colorado District 3 



Chapter II.— New Mexico District 17 



Chapter III.— Notes on Economic Botany 41 



Chapter IV.— Catalogue of Plants collected in Nevada, Utah, Colorado, New Mexico, 

 and Arizona, with descriptions op those not contained in Gray's Manual 

 of the Botany of the Northern United States, or in Vol. V of the 

 Geological Exploration of the Fortieth Parallel, Clarence King, Geol- 

 ogist in charge 55 



APPENDIX. 



Notes on that portion of California traversed by the Botanists of the Expedition of 



1875, with enumeration of plants collected during that year 35.3 



Table of Orders 379 



Index 381 



Explanation of Plates 401 



