405] FLORA OF COLUMBIA AND VICINITY 263 



APPENDIX C. 



List of New Hybrids. 

 Quercus imbricaria Michx. ^ Q. palustris Du Roi. 

 Quercus tinctoria Michx. X Q. palustris Du Roi. 

 Vernonia Drummondii Shuttlw. y V. interior Small. 

 Coreopsis involucrata Nutt. X Bidens coniosa (Gray) Wiegand . 

 Lactuca sagittifolia Ell. X Canadensis L. 



