Desert Island Plant Challenge

Shirl from Scotland has all garden bloggers to her desert island plant challenge. We can each take along three plants along that we really don't want to live without. Of course, even if the temperature were benign and food were not a problem, I'd still feel \seriously deprived with just 3 plants. With 8000 plants in the California Floristic Province, one of the biodiversity hotspots on this planet, 3 seems just not enough (even if only a portion of those plants are well suited for garden environment). But, regardless, here are my three choices.
First, a bit of color: California poppy (Eschscholzia californica). I have those beauties in my back yard, where they bloom from spring into fall and reseed wildly. It's so much fun to watch the native bees get drunk on the pollen and then tumble out of the blossoms. They thrive on neglect, I regularly see them between the tram rails in San Francisco.
Next, I want some fragrance, and I'll pick Salvia clevelandii (cleveland sage), a native shrub that grows to 4-5 feet high and at least as wide. Well, to be frank, it might grow twice as wide if you let it. I'm assuming the desert island has good to excellent drainage, I've already watched 3 Salvia clevelandii "Winifred Gilman" drown in the clay in spring. The species (rather than the Winifred Gilman cultivar) seems to survice and thrive, though. I like nothing better than coming outside on a summer evening and brushing against the leaves. That smells like California to me.
I'd also like a tree, and really struggled with that choice. Here was a chance to have a sleepless night: A Blue oak? California redbud? Manzanita? But then I remembered I'm not actually going. Much relieved, I picked Sambucus mexicana (blue elderberry). The white blossoms are visited by many insects in the spring, and the blue berries are a favorite of the native birds. You can even make jam from them. Sambucus is fine with some shade but seems to thrive in the sun with no water in the wild (the plant books say it's found near streams, but I've seen them on top of the mountains).
P.S. I don't yet have photos of those plants yet, though I have them all in my garden. The poppy and the salvia photo are from Wikipedia and the elderberry pictures are from CalPhotos, where you can look at many more photos of California Native plants. All elderberry pictures I'm showing here (thumbprints are allowed with attribution) are by Keir Morse.