Brodiaea santarosae: a Species Restricted to the Santa Rosa Basalt

• Basalt is an unusual soil type - it has high levels of magnesium and low levels of calcium and other essential nutrients. Many species are restricted to unusual soil types, which often exclude most species.

• From Kruckeberg 2006, Introduction to California Soils and Plants:

  most new species will be in places .. with kooky soils..in such remote places ...as... out of the way places in southern California.

• Pictures of Santa Rosa Basalt Brodiaea

• Locations of Three Brodiaea Species

• Locations

• Ranunculus occidentalis, western buttercup, is also confined to the basalt at the Santa Rosa Plateau.

http://tchester.org/srp/plants/communities/geo_3b.html Comments and feedback: Tom Chester Last update: 6 November 2005.

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