Abies grandis
The Lochsa Uplands ecoregion is mountainous and dissected. Granitic rocks underlay the region which is spread out by volcanic ash deposits that help improve the soil fertility and water retention in the uplands. Grand fir ("Abies grandis") and Douglas-fir are common throughout the region. Engelmann spruce ("Picea engelmannii") and subalpine fir grow at high elevations, while cedar-hemlock-pine forests are found in canyons and on north-facing slopes.