wild potato

a plant, Solanum jamesii, of the southwestern U.S., related to the edible cultivated potato.

1765–75, Americanism

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wild potato

erect or spreading perennial of southwestern United States and Mexico bearing small pale brown to cream-colored tubers resembling potatoes 
WordNet® 3.0, © 2006 by Princeton University.
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Example sentences
Wild potato genes could be the key to blight-resistant potatoes potatoes.
The common wild potato also forms another article of food in savage life.
Most potatoes are susceptible to potato late blight, but some wild potato species are immune.
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