45ac3812_des_Peninsula_Land_Conservancy__Notes_on_the_species
[Species] blue elderberry (Sambucus mexicana) [Notes on the species] 
This tree-like shrub can grow to 25 feet in height. It prefers wetter areas on the Peninsula. Its flowers appear in late spring and ripen into purplish blue fruit in summer.
Education & Research: Native Plants | Palos Verdes Peninsula Land Conservancy
Notes on the species