ACKNOWLEDGMENT Xl 



6. Salix cordata Missouriensis (Bebb), p. 69. 



7. Chennpodium album Berlandieri (Moq.), P- 80. 



8. Portulaca negleda, p 86. 



9. Crataegus Mackenzii Sarg., p. 108. 



10. Prumis Janata (Sudw.), p. 109. 



11. Lespedeza 3fanniana, p. 118. 



12. Lespedeza acuticarpa, p. 118. 



13. Lespedeza violacea prairea, p. 118. 



14. Oenothera strigosa (Rydb.), p. 139. 



15. Convolvulus sepium frater7iiflorus, p. 153. 



16. Physalis 3Iissouriensis, p. 167. 



17. Physalis subglabrnta, p. 167. 



18. Lobelia spicata leptostachys (A. DC), p. 183. 



19. Vernonia interior Drunmondii (Shuttlw. ), p. 190. 



20. Vernonia interior Baldwinii (Torr. ), p. 191. 



21. Solidago longipetiolata, p. 194. 



22. Astrr parvieeps (Bnrgess), p. 196. 



Descriptions of the species of Lespedeza indicated as new appeared in 

 " Transactions of the Academy of Science of St. Louis," Vol. XH., No. 2, 

 issued March 19, 1902, and descriptions of several other species here in- 

 dicated as new were published in Vol. XII., No. 7, of the same Trans- 

 actions after the portion of this work containing these species had been 

 printed. 



ACKNOWLEDGMENTS. 



In closing this work I wish to acknowledge my indebtedness to several 

 gentlemen without whose assistance it would not have been possible in its 

 present form. I have had the benefit of all of Mr. B. F. Bush's and Rev. 

 Cameron Mann's notes and observations made in this county and extend- 

 ing over the last twenty years, as well as of the large botanical knowledge 

 possessed by both these gentlemen. Quite a number of the species included 

 herein rest solely on their authority, as do also a large number of the 

 localities given for other species. Mr. Bush's assistance has been so great 

 that it i3 but his due to associate his name with the authorship of this 

 work. This has accordingly been done. Many others, especially Mr. 

 William Nelson, of the Kansas City Star, have taken an active interest 

 in the publication of this work and to these my hearty thanks are hereby 

 extended. Thanks are further due to distinguished botanists through- 

 out the United States who have on many occasions named plants sent to 

 them both by myself and by Mr. Bush. I wish also to especially thank 

 Professor N. L. Britton and his assistants in charge of the New York Botan- 

 ical Garden for the use of the facilities afforded by that institution, and 

 for assistance in many difficult genera. Kenneth K. Mackenzie. 

 Kansas City, Missouri, 

 June 10, 1902. 



