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→Further Reading
* 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.
* Robson, K.A. 1992. A comparative study of the rare Wenatchee larkspur (''Delphinium viridescens'') and its sympatric relative, Western monkshood (''Aconitum columbianum''). USDA-USFS, Pacific Northwest Research Station, Portland.
* Robson, K.A. 1992. A comparative study of the rare Wenatchee larkspur (''Delphinium viridescens'') and its sympatric relative, Western monkshood (''Aconitum columbianum''). USDA-USFS, Pacific Northwest Research Station, Portland.
* (2002). Rare Plants in Washington, and Research. The Rare Plant Care and Conservation Program at the University of Washington's Center for Urban Horticulture. [http://depts.washington.edu/rarecare/index.htm http://depts.washington.edu/rarecare/index.htm]. Accessed: 2002.
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