Manzanita: Arctostaphylos glauca
(Click on title to see more photos) Photo above, on top of the south peak area of Rodriguez Mtn, just south of Palomar Mtn, just south of La Jolla Indian Reservation. Apparently Arctostaphylos glauca, of advanced age, and resembling bonsai aesthetic in character, especially with the boulders. Quite an engaging compositional stylistic character in these two photos. Good influence for inspiration for some built landscapes where this stylistic can be appropriate. Also notice the frosty-faint-greenish colored lichen growth on the rock, especially left side of photo. A better species to use for irrigated landscapes is the northern-central California originated hybrid cultivar known as Dr. Hurd Manzanita, which is likely a hybrid of A. manzanita and A. stanfordiana. Though if you live in A. glauca habitat, A. glauca can do the job, but should only receive water during winter, otherwise it's prone to root diseases, which at the least can cause partially 'burned' foliage if watered during spring to fall, generally speaking.
Photo below: near Eagle Crag at top along the truck trail near the 'junior crag'. Apparently Arctostaphylos glauca or Arctostaphylos pringlei, of advanced age, and resembling bonsai aesthetic in character. Pines in background and plants below the Manzanita I wasn't really paying attention to, though pine could be Coulter pine, and the plants below could be youngster manzanitas.