Noun | 1. | ![]() asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs elderberry bush, elder - any of numerous shrubs or small trees of temperate and subtropical northern hemisphere having white flowers and berrylike fruit blue elder, blue elderberry, Sambucus caerulea - shrub or small tree of western United States having white flowers and blue berries; fruit used in wines and jellies danewort, dwarf elder, Sambucus ebulus - dwarf herbaceous elder of Europe having pink flowers and a nauseous odor |