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Species: Coryphantha robustispina
Common Name: Endangered, Federal Endangered Species Act; CITES Appendix II; Highly Safeguarded, Arizona
Range: Sonora, Mexico, and southern Arizona
Artist: Joan McGann
Artist Home Country: United States
Medium: Pen and ink
Desert grasslands in Sonora, Mexico and
southern Arizona contain the remaining
populations of this cactus. Its numbers are
affected by urban development, off-road
vehicles, and illegal collecting, as well as
invasive non-native plants.