Eleven national forests in Arizona and New Mexico and two national grasslands in New Mexico, Texas, and Oklahoma make up the Southwestern Region of the U.S. Forest Service. With elevations ranging from 1,300 feet in the Sonoran Desert on the Tonto National Forest to 13,161 feet in the alpine tundra of Wheeler Peak on the Carson National Forest, the vegetation is extremely varied and the wildflower viewing opportunities are tremendous!

Nodding onion (Allium cernuum). Photo by Robert Sivinski, CalPhotos.

Sacramento prickly poppy (Argemone pleiacantha spp. pinnatisecta). An endangered plant. Photo by Robert Sivinski.

Rock clematis (Clematis columbiana). Photo by Robert Sivinski, CalPhotos.

Rocky Mountain beeplant (Cleome serrulata). Photo by Robert Sivinski, CalPhotos.

Missouri gourd (Cucurbita foetidissima). Photo by Robert Sivinski, CalPhotos.

Tree cholla (Cylindropuntia imbricata). Photo by Robert Sivinski, CalPhotos.

Kuenzler's hedgehog cactus (Echinocereus fendleri). An endangered plant. Photo by Robert Sivinski.

Kingcup cactus (Echinocereus triglochidiatus). Photo by Robert Sivinski, CalPhotos.

Apache plume (Fallugia paradoxa). Photo by Robert Sivinski, CalPhotos.

Cliff fendlerbush (Fendlera rupicola). Photo by Robert Sivinski, CalPhotos.

Bush morning-glory (Ipomoea leptophylla). Photo by Robert Sivinski, CalPhotos.

Scarlet gilia (Ipomopsis aggregata). Photo by Robert Sivinski, CalPhotos.

Holy Ghost ipomopsis(Ipomopsis sancti). An endangered plant. Santa Fe National Forest. Photo by Robert Sivinski, CalPhotos.

Mountain tail-leaf (Pericome caudata). Photo by Robert Sivinski, CalPhotos.

Woods' rose (Rosa woodsii). Photo by Robert Sivinski, CalPhotos.

Cutleaf coneflower (Rudbeckia laciniata). Photo by Robert Sivinski, CalPhotos.