It's Kalanchoe manginii, chandelier plant. I grow it outdoors in Sunset Zone 17 and am very fond of it. It makes a wonderful hanging basket, container plant or small scale ground cover and does well in quite a bit of shade. It blooms in late winter/early spring and attracts hummingbirds.

Here is a link that might be useful: Kalanchoe manginii

My favorite kalanchoe. Easy to grow, nice foliage, low growing, and those standout red flowers put on a show for months. I bought a 1 gal. plant years ago, and when I moved, brought a small clump to the new house. By just breaking off stems and sticking them into the ground, I have quickly created many patches among the other plants in the garden.

Great, thanks to both of you!

Will it take full sun in Sunset 23?

Very neat. It looks like a good plant for the hummers.