



PREFATORY NOTE. 



The importance to Nebraska botanical students of the paper entitled an 

 "Appendix to the Catalogue of the Flora of Nebraska, " prepared by Mr. 

 Herbert J. Webber, M. A., formerly assistant in botany in the University of 

 Nebraska, now assistant in the Shaw School of Botany, St. Louis, warrants 

 its republication by the University. It was published originally in the Trans- 

 actions of the Academy of Science of St. Louis (Vol. VI., No. i, March 12, 

 1S92.) The present edition differs from the first only in the correction of a 

 few minor errors, and the rearrangement of the index. 



In his preface to the first edition Mr. Webber explains that " the names of 

 those reporting species follow in every case the name of the species reported 

 as it occurs in the Appendix. The collector whose name follows the species, 

 it must be understood, is to be taken as authority for its occurrence, as in 

 many cases I have not had the opportunity to examine the specimens. Thus 

 specimens here reported must be understood to be preserved in the herbaria 

 of those reporting the species, or in the Herbarium of the University of Ne- 

 braska." 



The " Supplementary List " (p. 45 et seq.) includes all the species of plants 

 added since Mr. Webber's paper went to press. It consists mainly of the ad- 

 ditions made by Mr. P. A. Rydberg, a graduate student, in his collecting tour 

 through the western counties in the summer of 1891, with others made by 

 members of the University Botanical department, and Dr. H. Hapeman of 

 Minden, and Rev. J. M. Bates of Valentine. 



Specimens of nearly all the species reported in both lists, are deposited in 

 the University Herbarium. 



It is hoped that the periodical publication of accessions to the flora of the 

 state will stimulate botanical students to a closer study of our native plants, 

 and encourage them to deposit specimens of newly discovered species in the 

 University Herbarium. To this end correspondence is solicited by the Depart- 

 ment of Botany. 



Address, Department of Botany, 



UNIVERSITY OF NEBRASKA, 

 May 25. 1892. Lincoln, Nebr. 



