My world traveling son is in California and managed to carve out two days of adventure time for himself. Backpack on his back, GPS and camera in hand, he was off on a 42 mile (67kilometer) solo hike. I cannot share the names of the plants, but I think you can enjoy the beauty. He said the temperature was perfect.
Joshua trees
A jumping cholla cactus in the foreground
Yucca plant
Prickly pear
Another variety of prickly pear
Echinocereus triglochidiatus. Hedgehog cactus, claret cup or king cup are some of the common names. 
That’s the end of the trail for today!
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Gardenbug World 
Beautiful! I wish I could go on a 60 mile solo hike! I don’t think I’d make it that far in 2 days, though!
Spectacular! I can help you with some names. The first few pictures are joshua trees. Picture 4 (foreground) is a jumping cholla cactus. Picture 8 is yucca, and 9 and 10 are different types of prickly pear. 12 is possibly a century plant but I’m far from sure on that one. DH and I just love the desert–I’d love to be there when the cactus are blooming. Be sure and tell Adam I just love his pictures!
Just visited for the first time back at New Years and couldn’t believe I had put it off for so long. Really magical place. Watch out for those Cholla cacti. They are pretty to look at but you do not want one jumping on you!
The red flowered cactis are Echinocereus triglochidiatus. Hedgehog cactus, claret cup or king cup are some of the common names. I have had a thornless variety for years now that has yet to bloom for me. Maybe this will be the year.