* Hitchcock, C.L., A. Cronquist, M. Ownbey, and J.W. Thompson. 1964. ''Vascular Plants of the Pacific Northwest, Part 2: Salicaceae to Saxifragaceae.'' University of Washington Press, Seattle. 597 pp. | * Hitchcock, C.L., A. Cronquist, M. Ownbey, and J.W. Thompson. 1964. ''Vascular Plants of the Pacific Northwest, Part 2: Salicaceae to Saxifragaceae.'' University of Washington Press, Seattle. 597 pp. |