PIPER—DELPHINIUM SIMPLEX AND ITS ALLIES. 203 
Representative examples of this species in the U. S. National Herbarium are 
the following: 
WASHINGTON: Pullman, July 21, 1894, Piper; Elmer 3; July 30, 1895, 
Hardwick; without definite locality, Vasey 160, 161; Wenache, Whited 
1277; Tieton Basin Cotton 449; Hllensburg, Whited 523; Spokane 
County, Suksdorf 720; Falcon Valley, July 17, August, 1881, Suksdorf. 
OREGON: Pine Valley, Cusick 2440; John Day River, H. BE. Brown 72; 
Camas Prairie, Grigiths € Hunter 86. 
BritisH CotumBia: Mouth of Kootenai River, July, 1890, Macoun. 
3. Delphinium distichum Geyer; A. Gray, Syn. Fl. 1°: 49. 1895. 
This is very closely allied to D. simplex Dougl. and seems to intergrade fully. 
Typically it is distinguished by the broader lobed, nearly glabrous basal leaves. 
The true D. simpler Dovgl. and D. distichum Geyer make up together the 
Delphinium distichum of the Synoptical Flora. On the whole Hooker’s original 
treatment of the plant as a variety of Delphinium simpler (D. simpler dis- 
tichiflorum Hook.)' is perhaps the wisest disposition. 
1 Hook. Lond. Journ. Bot. 6: 67. 1847. 
