Mexican pinyon pine (Pinus cembroides) is one of the most common evergreens in the Chisos Mountains. The seeds, or nuts, were an important food source for indigenous peoples as they are high in calories. The nuts also provide food for many animals, from squirrels to foxes to black bears.The nuts of a closer relative, Pinus edulis, are sold in grocery stores and are used to make pesto, hummus, and as salad toppers. This tree's range in the United States is confined to Texas, New Mexico, and Arizona.