References

Pojar, Jim and Andy MacKinnon. Plants of the Pacific Northwest Coast. Lone Pine Publishing, British Columbia, 1994.

Moore, Michael. Medicinal Plants of the Pacific West. Red Crane Books, Sante Fe, 1993.

Krukeberg, Arthur R. The Natural History of Puget Sound Country. The University of Washington Press. Seattle, Wa. 1995:Pp.306-347