190 
probable that crossing such as that carried on by F. C. Heine- 
mann accounts for the repetition of one color in many different 
e forms such as cuspidata, radiata, grandiflora, 
uld seem suffici 
sense of de Vries. It would appear that numerous of the varie- 
ties exhibit characteristics which in comparison to the wild 
species are decidedly new. Others and perhaps the reater 
umber of a i 
offer i 
field for interesting and highly profitable investigation especially 
to students of botany in that vicinity. 
It seems unlikely that hybridization with other species has 
played a part in creating the large number of varieties of Phlox 
a 
range of variability all the present varieties of Phlox Drummondit 
e been derived i i i 
n 
numerous instances these differences have been paralleled in the 
different groups. 
The development of the numerous and widely different varie- 
ties of Phlox Drummondii, the history of which is fairly well 
