Red spruce ("Picea rubens") is the most common tree species on the summit. Red spruce ("Picea rubens") has arisen from an isolated population of black spruce ("Picea mariana"). In the Northeast, red spruce ("Picea rubens") can be a minor canopy associate. Red spruce ("Picea rubens") and Fraser fir ("Abies fraseri") dominate the forest canopy. The latter is dominated by the Mountain's eponymous red spruce ("Picea rubens").