Going out on a limb here today and making a bold claim that this is an Emory's Rock Daisy [Perityle emoryi] (See Emory Rock Daisy at Calflor.org).The impression I have gotten several times when looking at these photos of tiny flowers against a background of small rocks is that I'm looking into an aqarium. The only thing missing is the water and some fish.
If you look carefully at these photos you will notice that once you get past the sunny yellow face in the center of the white petals you will notice how many other plants there are around the daisys. I cropped this photo in two different ways. In the first there are some tiny pink flowers to the lower left, and in the second one, there is some grass sticking up in the upper right corner. Unless you pay attention in the desert you miss a lot of stuff like this since it is all on a very small scale.
See the full-sized versions of these photos of Emory's Rock Daisy in the Desert Flower Photo Gallery.
This cluster of tiny wildflowers is typical of the flowers in Plum Canyon in Anza-Borrego Desert this spring. Because of the dry and harsh environment, most of the flowers are tiny like the three in this photo. But what they lack in size, they make up for in color.
Well, I spent a lot of time searching through the 
I'm hoping I correctly identified this white daisy-like flower in this photo from Anza-Borrego desert; I believe it is desert chicory (rafinesquia neomexicana), but if I'm wrong, please let me know in a comment below.
Not only were the flowers spectacular in the Anza-Borrego desert, but so too were the caterpillars! Cleverly camouflaged against the gold flower was this spectacular caterpillar.
Last weekend I went with a friend to Anza-Borrego Desert State Park in Southern California to see the spring blooming of wildflowers. The park has had about 4" of rain this past rainy season which is a good average for that region so there was a pretty good display of desert flowers this spring.
