The is a major ecosystem and vegetation type composed of woody shrubs that form a dense thicket about 3 to 13 ft high. The species that live in the are adapted to very dry summers and mild rainy winters. The plants grow in extensive, but discontinuous stands on hillsides and mountain slopes from south-central Oregon southward through the coast ranges of California and the foothills of the Sierra Nevada. The is at its fullest in development at southern California and northern parts of Baja California, Mexico. It is also found in northwes ....