Studies in the Botany of the Southeastern United States. — X. 



By JOHN K. SMALL. 



THE GENUS TRADESCANTIA IN THE SOUTHERN 



STATES* 



Six years' experience with Tradescantia, both in the field and in 

 the herbarium, has convinced me that there is something funda- 

 mentally wrong in the several existing treatments of the genus. 

 Since I became interested in the forms occurring in the Southern 

 States Dr. J. N. Rose has arranged to monograph the North 

 American Commellinaceae and I publish these notes with his 

 knowledge and consent. 



Linnaeus described a single North American species, namely, 7. 

 Virginiana.^ Of American authors, Walter,^ Michaux,§ Parsh,|| 

 Elliott ][ and Darby,** each described two species, while Chap- 



* I have had the privilege of examining material in the herbaria of Lafayette Col- 

 lege, through Professor Thos. C. Porter, and of Franklin and Marshall College, through 

 Professor J. S. Stahr. Professor S. M. Tracy has sent me specimens at various times. 

 I have also received material from regions beyond the area with which this paper is 

 concerned, from Mr. B. F. Bush, Rev. E. J. Hill and Rev. J. M. Bales. 



f Sp. ri. 288. 



XY\. Car. 119. 



I Fl. Bor. Am. 119. 



II Fl. Am. Sept. 218. 



\ Bot. S. C. & Ga. 380-381. 

 ** Bot. S. States, 547-548. 



