12 MISCELLANEOUS CIRCULAR 92, U. S. DEPT. OF AGRICULTURE 



the courtesy of the district forester, F. C. W. Pooler. Even at this late 

 date, the author desires to acknowledge publicly the receipt of valua- 

 ble information on the range of Missouri trees constributed by B. F. 

 Bush, of Courtney, Mo., in a letter dated January 4, 1899. Mr. 

 Bush's notes, here incorporated, were made one year following the 

 publication (1898) of the first edition of the Check List, which he 

 took the trouble to go over. Likewise, the writer desires to express 

 his hearty appreciation of a list of previously unpublished common 

 names of trees sent him by John Foley, formerly a member of the 

 Forest Service and now forester of the Pennsylvania Railroad. 



The author's thanks are also due William Trelease, who supplied 

 helpful information regarding hybrid oaks, and C. S. Sargent, who 

 has given valuable aid at various times. Appreciation is here ex- 

 pressed to Ellsworth Bethel, Leslie M. Gooding, and S. N. Wycoff 

 tor notes on the range of Pinus Jlexilis in southwestern Nebraska. 



Reference is made elsewhere in this introduction to " Standardized 

 Plant Names," a work recently published in the interest of uniformity 

 in the use of names applied to plants in American commerce. In so 

 far as this catalogue deals with the common names of our native 

 and naturalized trees, it has been most useful to the Forest Service 

 Committee on Common Names of Trees in its endeavor to standard- 

 ize the names of forest trees. The author's thanks are here expressed 

 particularly to F. V. Coville, a member of the subcommittee which 

 prepared "Standardized Plant Names," for his careful review of the 

 common names used in the Check List. 



Acknowledgment is also made to John K. Small, of the New York 

 Botanic Garden, for the help he has given in deciding on the addition 

 to our tree flora of naturalized and new and little-known Florida 

 trees, as well as for supplying information on their range. To Roland 

 M. Harper the author expresses his hearty appreciation of much helpful 

 information given on the distribution of trees in the Southern States. 



Finally the author desires to give credit to Margaret E. Baker for 

 the laborious and painstaking work she has done in preparing the 

 index. 



George B. Sud worth 



