This savanna or grassland was once covered with native bunch grasses and now is dominated by nonnative grasses and colorful wildflowers. The most common tree in this habitat is the Oregon white oak (Quercus garryana), which helped name this community. This species is recognized by its rounded lobed leaves, whitish bark, and round acorns. The Ponderosa pine (Pinus ponderosa) can also be found in this habitat. Ponderosa pines are tall, open trees with needles that are 4-11 inches long and grow in clusters of threes.