5 Needle Pine Regional Key
This region includes Alberta and British Columbia in southwest Canada, and Idaho, Montana, Oregon, and Washington in the northwest United States. Four species of 5 needle pine are known to occur in this region: Limber pine (Pinus flexilis), Sugar Pine (P. lambertiana), Western White Pine (Pinus monticola), and Whitebark Pine (Pinus albicaulis). A dichotomous key to the 5 needle pines of this region is provided below. Many of leads in the key follow from Kral et al. (2022). Photos of seed cones of the 5 needle pines in this region are presented below the key.
Kral, R. 2022. Pinus. In: Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico [Online]. 22+ vols. New York and Oxford. Vol. 2. http://beta.floranorthamerica.org/Pinus. Accessed [2022-09-11].