Chesnut, V. K. (1902). 《Plants Used by the Indians of Mendocino County, California》. Contributions from the U.S. National Herbarium Vol. VII. Reprinted 1974 by Mendocino County Historical Society. 114쪽. LCCN08010527. OCLC6218739.
“BSBI List 2007”. Botanical Society of Britain and Ireland. 2015년 1월 25일에 원본 문서(xls)에서 보존된 문서. 2014년 10월 17일에 확인함.
worldcat.org
Chesnut, V. K. (1902). 《Plants Used by the Indians of Mendocino County, California》. Contributions from the U.S. National Herbarium Vol. VII. Reprinted 1974 by Mendocino County Historical Society. 114쪽. LCCN08010527. OCLC6218739.