The California poppy (Eschscholzia californica) is kind of California's flower mascot. It's an iconic image: wide golden California poppies nodding in the foreground on a grassy bluff over-looking the rocky coast and crashing waves.
Poppies are so obvious this time of year. They're not only stunningly beautiful, but they seem to be able to grow anywhere. In the gravel the side of the road, on the dirt built up on an old train trestle, through the cracks in the sidewalk. As long as there is sun, they thive. The petals come in shades of yellow to deep orange. I've even seen a plant with white flowers this year (in Sonoma co.).
As the state flower, they're protected, so you're not meant to pick them in the wild! (In fact picking native wildflowers is something I tend to avoid in general.) Cultivated varieties are available for the garden.
The first two photos taken on April 27, outside the historic Ukiah depot building. The last two on April 1 in front of the Mousse Cafe in Mendocino.