Vascular Plants of the Whipple Mountains

Master’s research (Sept. 2002–Dec. 2004)

This study inventoried the plants occurring naturally in the Whipple Mountains of southeast San Bernardino County, California.  This range is the eastern-most portion of California, and home to 17 rare plants listed by the California Native Plant Society (CNPS).  Three species, occurring in Arizona, but new to California, were documented through this floristic study: Berberis harrisoniana, Delphinium scaposum, and Erigeron oxyphyllus.

Related publications:
De Groot, Sarah J. In review. A Conservation Plan for Berberis harrisoniana Kearney and Peebles (Berberidaceae); Kofa Mountain Barberry.  Rancho Santa Ana Botanic Garden Occasional Publications.

De Groot, Sarah J. 2007. Vascular Plants of the Whipple Mountains. Aliso 24: 63–96.

De Groot, Sarah J. 2007. The “Nose” of California: an important part of the state’s plant diversity. Fremontia 35: 2–6.

De Groot, Sarah J. 2004 [issued June 2005]. Vascular Plants of the Whipple Mountains [San Bernardino County]: A Progress Report. Crossosoma 30:1–4.

De Groot, Sarah J. 2005. Noteworthy Collection—California. Madroño  52:125–126.
—Two California state records are reported, Delphinium scaposum and Erigeron oxyphyllus.  Both were discovered in the Whipple Mountains.

De Groot, Sarah J. 2004. Vascular Plants of the Whipple Mountains. M.S. Thesis, Claremont Graduate University.

 Anderson, John, and Sarah J. De Groot. 2004. Noteworthy Collection—California. Madroño 51(4):395.
—Berberis harrisoniana was thought endemic to Arizona, until it was discovered in the Whipple Mountains of California in 2001.

Monument Peak in the Whipple Mountains.

Other publications:

 Friar, Elizabeth A., Linda M. Prince, Eric H. Roalson, Mitchell E. McGlaughlin, Jennifer M. Cruse-Sanders, Sarah J. De Groot, and J. Mark Porter. 2006. Ecological speciation in the east Maui-endemic Dubautia (Asteraceae) species. Evolution 60(9): 1777–1792.