Anagallis monelli: It's BLUE!
I had this plant a few years back, and it died. It grew to about 8" tall and 20" wide. I've been on the lookout for it locally ever since and finally bought a couple at the Fullerton Green Scene plant sale/show.
Oh that glorious, electric, no-purple-in-it-anywhere blue. Happy to have it back! It is in the same genus as a weed that plagues this area, Anagallis arvensis. A. arvensis is a prolific seeder, but my original plant produced no seedlings, however much I longed for them.
Calflora describes A. monelli as a perennial, so how did I kill it? No clue, no matter. The replacements were inexpensive. It's just a little plant that doesn't take up much room, and forms no woody structure. Perhaps it's just a biennial, or an annual. Fine, whatever. What matters is that incredible blue.