montane

vuori- mountainous Mountainous; specifically, pertaining to the cool, moist upland slopes below the timberline.
1999, (w), Genome, Harper Perennial 2000, p. 27:

The gorilla's ancestor had probably taken to the montane forests of a string of central African volcanoes, cutting itself off from the genes of other apes.

The wintergreens, and northern montanes such as Linnaea have their stronghold in these pinewoods and some of their rarity may be due to the reduction in the extent of the forest.