This region includes Oklahoma, Texas, New Mexico, and Arizona. Hike below mighty saguaros in the Sonoran Desert. Check out wildflowers blooming by Texas roadsides. Find out why the Grand Canyon is so rich in plant diversity.
Take a virtual field trip to get to know some interesting species. What should we learn about first?
Click on a photo to get started:
Arizona: Melissa Delzio, Flickr.
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