The Topanga Rock!
California State Rock!
Don't Take Schist for Granite!
Geology is one major reasons why species richness in California is about seven times higher than anywhere in the U.S.
The Endemic Manzanitas and Friends
Ione manzanita adapts to hostile soils
Gankin, R. and J. Major. Arctostaphylos myrtifolia, its biology and relationship to the problem of endemism. Ecology 45: 792-808.
Halsey, R.W. 2005-06. Ione chaparral. Fire Bulletin #16-18. The California Chaparral Institute.
Safford, H.D. and S. Harrison. 2004. Fire effects on plants diversity in serpentine vs. sandstone chaparral. Ecology 85: 539-548. Safford, H.D. et al. 2005. Serpentine endemism in the California flora: a database of serpentine affinity. Madrono 52: 222-257. Whittaker, R. H. 1954. The ecology of serpentine soils. Ecology 35: 258-288.