Solanum tuberosum, also known as the potato, is the domesticated form of the wild plant Solanum brevicaule. The latter potato originated in what is now southern Peru and northwestern Bolivia, where native peoples bred it into the starch we know and love. Post 1492, that potato would spread via the Columbian Exchange—a widespread transfer of plants, animals, culture, etc. between the Americas and rest of the world that occurred in the 15th and 16th centuries. But, while Solanum tuberosum likely didn't make its way to North America until later, it was not the only potato game around. Upwards of 20 species of wild potato stretch from southern Chili into the North America, and it was one of these wild varietals that the archaeologists think earlier residents might have enjoyed.