If you didn't get out to see the desert flowers a few weeks ago in Las Vegas then I'm afraid you missed out. The flowers were fantastic and it's took bad they were around for such a short period of time.
The following is a pic from Spring Mountain Ranch. The green patch in front of the old sleeping quarters has many great white flowers. They're tough to see in the picture, but they're nice.
The cactus flowers are just beginning to unfold as well - very awesome.
Enjoy your hikes and the day.
Happy hiking