Trees commonly found in the mountains and dry, rocky places of the national park include gray birch, common juniper, jack pine, and pitch pine, while smaller trees, or shrub, species include green alder and pin cherry. Other common shrubs and flowering plants found in the mountains and rocky areas include alpine aster, bearberry, velvetleaf blueberry, bush-honeysuckle, black chokeberry, three-toothed cinquefoil, mountain cranberry, bracken fern, Rand's goldenrod, harebell, golden heather, mountain holly, black huckleberry, creeping juniper, sheep laurel, red raspberry, Virginia rose, mountain sandwort, bristly sarsaparilla, sweetfern, and wild raisin. Poverty oatgrass is the most common grass found in mountainous terrain.