YELLOW PINE • E-FREE TRANSLATION.COM • Definition of Yellow pine

... adapting this subspecies to this habitat of red sandstone, for these chipmunks are generally found in the rubble and among the pinon at the base of the cliffs. At many places in Utah above these cliffs of red sandstone there are forests predominantly composed of yellow pine. Kelson (1951:42-43) states that "these two habitats are in immediate juxtaposition, the transition from one to the other often occurring in only a few feet ..." and again, "No one to my knowledge, has found any evidence in specimens from Utah of ...

— Taxonomy of the Chipmunks, Eutamias quadrivittatus and Eutamias umbrinus • John A. White