Noun | 1. | ![]() asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia brass buttons, Cotula coronopifolia - South African herb with golden-yellow globose flower heads; naturalized in moist areas along coast of California; cultivated as an ornamental |