Accepted By:
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Hartman, R. L. & B. E. Nelson. 1998. Novelties from North America north of Mexico: A 20-Year Vascular plant Diversity Baseline. 1–51 (mss.).
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Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.
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Sheikh, M. Y. 1983. New taxa of western American Eryngium (Umbelliferae). Madroño 30: 93–101.
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