PI. 304. 
A WILD POTATO FROM THE ANDES. 
(Solarium tuberosum L., S. P. I. No. 53187.) 
These tubers were collected from wild plants at an elevation of 13,000 feet in the mountains 
of northern Ecuador, where the potato occurs as a wild and probably indigenous 
plant. It is easily seen (they are here shown natural size) that they are too small to 
be of economic value, but plant breeders in the United States will be interested in 
testing them, in the hope that they may show characteristics which it will be worth 
while to combine with our cultivated varieties by crossing. It is interesting to report 
that the potato disease Phytophthora infestans attacks this wild native species. (Pho- 
tographed by Wilson Popenoe, Hacienda La liinconada, Ecuador, June 8, 1921; 
P18595FS.) ' 
