Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Crossosomataceae, Crossosoma Family

Crossosomataceae is a very small family of shrubs commonly called the Crossosoma Family. They are only found in the arid parts of the American west, southwest and Mexico.

Crossosoma Family has only 7 species found in North America, north of Mexico.

Crossosomataceae has 3 genera with only 8 accepted species name. Arizona has all 3 genera and 3 species with several varieties.

The Plant List. A working list of all known plant species.[accessed 15 February 2015
Wikipedia contributors, 'Crossosomataceae', Wikipedia, The Free Encyclopedia, 24 September 2014, 18:46 UTC,
[accessed 6 April 2015]
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database – ITIS search