dilleniidae: a group of families of more or less advanced trees and shrubs and herbs having either polypetalous or gamopetalous corollas and often with ovules attached to the walls of the ovary; contains 69 families including Ericaceae and Cruciferae and Malvaceae; sometimes classified as a superorder
class: (biology) a taxonomic group containing one or more orders
spanish broom: tall thornless shrub having pale yellow flowers and flexible rushlike twigs used in basketry; of southwestern Europe and Mediterranean; naturalized in California