Critically Imperiled (NatureServe)
T.Chester, W.Armstrong & K.Madore
Brodiaea santarosae is a rare Brodiaea species known by the common name Santa Rosa brodiaea and Santa Rosa Basalt brodiaea. It is endemic to southern California, mostly in the region around the junction of Orange, Riverside, and San Diego Counties and limited to ancient basaltic soils. There are only five known populations. It was once thought to be an intergrade of Brodiaea filifolia and B. orcuttii, but measurements found this to be false. It was described as a new species in 2007.
It is on the California Native Plant Society list 3 as a rare and endangered species. It is a perennial producing an inflorescence bearing bright purple flowers. Each flower has six spreading tepals with a center containing three stamens and narrow or small staminodes, which are flat sterile stamens lying against the tepals.
- Chester, Tom; Armstrong, Wayne; Madore, Kay (16 November 2007). "Brodiaea santarosae The Santa Rosa Basalt Brodiaea". Retrieved 18 December 2009.
- The Nature Conservancy
- Armstrong, W. Notes On Santa Rosa Basalt Brodiaea (Brodiaea santarosae)
- Chester, T., W. Armstrong, and K. Madore. (2007). Brodiaea santarosae (Themidaceae), a new rare species from the Santa Rosa basalt area of the Santa Ana Mountains of Southern California. Madroño 54 187-198.
- Cal Flora
- Armstrong, W. Floral Variation in Brodiaea santarosae
- Salmon, R. Volunteers find new flower species at reserve. Press Enterprise November 19, 2007.
- Jepson Manual Treatment
- Photo gallery
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