100 200 MILES 



1 . ! I i I L 



' | ' I ' | ! I 

 6 100 200 300 KILOMETERS 



Map I03.-Populus heterophylh L., swamp cottonwood. Map lW.-Pri«iiis americana Marsh., American Plum. Map lOS.-Prunus an- 

 gustifolia Marsh., Chickasaw plum. Map 106.-Prunus Carolinian* (Mill.) Ait., Carolina laurelcherry. Map 10 i.-Prunus serottna 

 Ehrh., black cherry. Map 108.— Prunus umbellata Ell., flatwoods plum. 



