Cactaceae

A floristic account is provided for the cactus family as part of the vascular plant flora of the contiguous protected areas of Organ Pipe Cactus National Monument, Cabeza Prieta National Wildlife...

Type of Content: Reports, Papers, Journal Articles
Echinocactus horizonthalonius var. nicholii

Photo of a Nichol Turk's Head Cactus in the Waterman Mountains in Arizona.

Type of Content: Image Content
Frost damage on organ pipe
Type of Content: Image Content
Crested Saguaro

This deformity effects many cactus and is fairly rare.

Type of Content: Image Content
Crested Saguaro amongst blooming ocotillos
Type of Content: Image Content
Hanging saguaro arm with flowers and buds
Type of Content: Image Content

These photos are of Echinomastus erectocentrus var. erectocentrus (Needle-Spined Pineapple Cactus) near Vail, AZ.

Type of Content: Gallery
Saguaros and nurse tree

A mesquite nurse tree over-run by saguaros near Tubutama, Sonora.

Type of Content: Image Content

The Arizona hedgehog cactus, Echinocereus triglochidiatus var. arizonicus, was officially given Endangered status by the U.S. Fish and Wildlife Service under the Endangered Species Act of 1973 on...

Type of Content: Reports, Papers, Journal Articles

This cactus has a very limited distribution and is an Endangered Species. It survives in a narrow elevational zone from the upper Sonoran Desert into the Chapparal (sometimes Madrean Evergreen...

Type of Content: Gallery
Saguaro flowers and buds
Type of Content: Image Content
Saguaro flowers and buds
Type of Content: Image Content
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