there are 18 occurrences of the "arctostaphylos morroensis" plant, and it is abundant in some local areas. it is limited to a specific type of substrate known as "baywood fine sands", a type of sandy soil which originated in the pleistocene as windblown sand dunes. the plant is found on less than 900 acres of coastal sage scrub and chaparral habitat, sometimes forming monotypic stands on hillsides.