2 BOTANY OF THE DEATH VALLEY EXPEDITION. 



(5) Catalogue of species— a systematically arranged catalogue of tbe 

 plants collected by the expedition. For the sake of convenience, the 

 sequence of orders in Durand's Index Generum Phanerogamorum has 

 beeu adopted. In the matter of nomenclature, the principles recom- 

 mended by the Botanical Club of the American Association for the 

 Advancement of Science, at the Rochester meeting of LS!>2, have been 

 followed. In the study of systematic botany from the standpoint of 

 geographic distribution, an item of great importance is the place from 

 which came the type specimen of a species. A literatim copy of the 

 published statementof locality has been given whenever the work that 

 contained it could be examined. 



(6) Catalogue of specimens— a list of the specimens collected by 

 the expedition, arranged consecutively by numbers. This catalogue 

 is almost indispensable for reference in connection with the catalogue. 

 of species, since it contains additional data arranged nearly in chrono- 

 logical order. 



(7) Bibliography — prepared under the writer's direction by Miss 

 Josephine A. Clark. This is a list of books to which reference is made 

 in the catalogue of species, and which, except those marked by an as- 

 terisk, have been actually consulted in the preparation of the report. 



Acknowledgments are due to many who have aided in the preparation 

 of this report, materially hastening its completion and adding to its 

 value. The members of the expedition have all contributed to the suc- 

 cess of its botanical work, both by furnishing data and by collecting 

 specimens. Among those not directly connected with the botanical 

 corps, Dr. C. Hart Merriam, Mr. T. S. Palmer, Mr. Vernon Bailey, and 

 Mr. F. W, Koch have rendered important assistance in supplying ma- 

 terial and information. Certain groups of plants have been submitted 

 to various authorities for identification: Delphin ium to Dr. B. L. liob- 

 inson; several OruciferaB to the late Dr. Sereno Watson; Asirayalua 

 to Mr. E. P. Sheldon; a part of I'otmtilla to Dr. Hans Siegfried: a few- 

 species of Epilobium to Dr. William Trelease; the Umbelliferae to Dr. 

 J. N. Kose ; a part of ErUxjon urn to Mr. W. M. Canby ; Salt* to Mr. M . S. 

 Bebb; Carer to Prof. L. H. l.ailey; theGraminea' to the late Dr. (ieorge 

 Vasey; the Filices to Prof. D. C. Eaton; the other Pteridophyta and the 

 IlepaticretoProf. L. M. Underwood; the Musci to Mr. .1. M. Ilolzingcr; 

 the Fungi to Miss May Varney and Mr. ,1. B. Ellis; the Charaeeie to 

 Dr. T. F. Allen; and some of the Alga' to Dr. W. G. Fallow. 



Among the curators or owners of American herbaria to whom thanks 

 are due, either for the loan of types or for the critical comparison of 

 uncertain specimens, are Mrs. Katharine Brandegee, Mr. S. B. Parish, 

 Dr. William Trelease, Mr. H. E. Season, Dr. K. L. Britton, Mr. J. 

 II. Redtield, Mr. W. M. Canby, and Dr. Casimir de Candolle. The 

 writer spent two weeks at the Harvard University Herbarium, the rich 

 facilities of which, through the kindness of the curator, Dr. B. L. 



