In the Pike National Forest and San Isabel National Forest of the Rocky Mountains, the upper montane forest is also called the moist forest, with the mixed coniferous below called dry forest, and the subalpine forest above called cold forest. Stands may have a shade intolerant ponderosa pine (Pinus ponderosa) overstory, and a shade tolerant Douglas-fir (Pseudotsuga menziesii) or white fir (Abies concolor) understory.