lists have been compiled of plants in the Tucson area:
Cactaceae and Agavacae of Eastern Pima
County, Arizona by Matt Johnson, Botanical Specialist, Desert
Succulents of the Avra Valley Watershed,
west of Tucson, Arizona by John F. Wiens
© 1998-2007 Tucson Cactus and Succulent Society, Inc. All rights reserved.