Evening primroses are one of my favorite wildflowers here. These are nice large flowers which bloom in our yard some years. This type grows very low to the ground and looks very much as if someone were shredding yellow tissue paper and had scattered the bits around the yard. I am not sure exactly which type this one is, as there are several.
Sometimes on very cool mornings, evening primroses will still be gorgeous for awhile after the sun comes up. I took these photos on such a morning.