| 1. | The serpentine soils of Native American prehistoric sites, notably rock carvings.
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| 2. | This species is only known to grow on serpentine soils.
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| 3. | Serpentine soils normally provide an inhospitable environment for most plants.
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| 4. | It is sometimes a member of the serpentine soils flora.
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| 5. | Serpentine soils are known to be deficient in essential nutrients for plants.
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| 6. | It grows in serpentine soils in oak and pine woodlands and forests.
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| 7. | The plant is limited to the serpentine soils of the local landscape.
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| 8. | The subspecies " pubescens " is a serpentine soils endemic.
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| 9. | All 5 known species are endemic to the serpentine soils.
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| 10. | It is found on serpentine soils in the vicinity of Stanislaus Counties.
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