PREFACE v. 



Jepson's Flora of California; of Miss Eastwood's Key 

 and Flora of Rocky Mountain Botany; of Rydberg 's 

 Flora of Colorado; of Piper's Flora of Washington, 

 and of the original descriptions of many of the plants 

 published in the various botanical journals. 



To Dr. Rydberg, to Dr. Nelson and to Professor 

 Marcus E. Jones for determination of material; to 

 Professor Charles P. Smith for furnishing lists of the 

 spring-flowering plants of Cache County; to Dr. 

 Rydberg and to Professor Jones for advice on critical 

 points, and especially to the latter for valuable criti- 

 cism of the manuscript, the writer's warmest thanks 

 are due. 



Doubtless discrepancies may be discovered when 

 the book is put to use, and plants will be found not 

 herein included. It is the writer's earnest wis"h that 

 these may be communicated to him, in order that all 

 such errors of commission and omission may be 

 rectified. For this very reason, the present edition is 

 based on an estimate of only a yearte supply. The 

 writer hereby offers his aid to the teachers of botany 

 in determining any plants that may be sent to him, 

 with the end in view that we may all become better 

 acquainted with the flora, of our State. 



A. O. G. 



Salt Lake City, Utah, 

 Jan. 25, 1911. 



