Red and Yellow Desert Wildflower Colorburst

Here's a great burst of yellow and red from Anza-Borrego this past spring. Anyone who knows what these flowers are, I would appreciate it if you could please post a comment.

I recommend viewing the full-size photo in the Desert Flowers Gallery, but if you have a slow internet connection, I have posted this smaller image of this yellow and red wildflower colorburst in Anza-Borrego Desert.