I visited Joshua Tree National Park, which is in the Southern California desert, in April 2002, when I had a brief respite from the Storage Networking World conference being held in nearby Palm Desert. This is a tumbleweed. Don't touch it! It has sharp burrs. [Salsola kali. It is Russian - not even a native plant. Most tpeople think tumbleweed is native. Nope.] Thanks to Steven R. Hill of the Illinois Natural History Survey for plant identifications.
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