
A permanent slow-flowing stream runs through San Andres Canyon. |

As at the Cerro Colorado site, we found 26 species of succulents on our first visit. However, further survey did not turn up many additional species. |

This is a smaller area than Cerro Colorado, ca. 2 sq. km as compared to 10 sq. km. |

Mammillaria sp. |

Cylindropuntia tesajo, spiny form |

Cylindropuntia tesajo, spineless form |