8 University of California Publications in Botany. t VoL - 3 



under whose supervision the study has been made, has rendered 

 invaluable aid by his many suggestions and kindly criticism. 

 Professor W. A. Setchell and Mr. Townshend Stith Brandegee, 

 also of the University of California, have rendered much aid in 

 various ways, and Mrs. Katharine Brandegee, because of her 

 intimate knowledge of the California flora and of her generosity 

 in imparting this information, has placed me under lasting obli- 

 gation. Mr. Samuel B. Parish, of San Bernardino, who has 

 explored the botany of Southern California perhaps more 

 thoroughly than any one else, has not only allowed me the free 

 examination of his collections, but has also permitted the use of 

 his manuscript notes, and even these have been supplemented at 

 frequent intervals through correspondence. This kindness is 

 highly appreciated, since it is not too much to say that no 

 thorough revision of any considerable group of Southern Califor- 

 nia plants could be prepared at the present time without con- 

 sulting Mr. Parish and his herbarium. 



I am indebted to Miss Alice Eastwood for the privilege of 

 examining specimens in the Herbarium of the California Academy 

 of Sciences, and also her recent collections from Southern Cali- 

 fornia, and likewise to Professor Le Roy Abrams for the privilege 

 of consulting the Herbarium of the Leland Stanford Junior Uni- 

 versity. Professor J. G. Lemmon, of Oakland ; Dr. A. Davidson, 

 of Los Angeles, and Mr. Geo. B. Grant, of Pasadena, have all 

 kindly premitted me to examine their herbaria. Among the 

 resident botanists and collectors who have given much assistance 

 by supplying specimens from their respective localities may be 

 mentioned : Mrs. Charlotte M. Wilder, Professor and Mrs. Joseph 

 Grinnell, Miss Elizabeth Day Palmer, Mr. S. W. Austin, Mr. E. 

 E. Schellenger, Mr. L. A. Greata, Dr. R. J. Smith, Rev. George 

 Robertson, Mr. Fred M. Reed, Mr. E. A. Zumbro, Mr. F. Gilman, 

 and Mr. Ernest Braunton. Mr. Harley P. Chandler, Mr. Ernest 

 B. Babcock and Mr. Harold D. Babcock have accompanied me 

 on various botanical tours, mostly to the north of the district 

 covered by this paper, and rendered valuable aid both in the 

 preparation of material and in its study. My brother, George 

 R. Hall, has made several interesting collections in the higher 

 mountains at my request. 



