The first record of Gevuina avellana nuts in Argentine Patagonia is presented after its strati graphic identification at the Cueva Parque Diana site (900 BP). The identification of Gevuina avellana broadens the spectrum of food resources of plant origin known to the hunting and gathering societies of Patagonia, who incorporated and valued the seasonally abundant resources of the temperate forests of both mountain ranges. This gives weight to the idea that people living during times of pottery production had adaptive strategies for interacting in an efficient way with the forest environment and its resources.