Source : WordNet®

false indigo
     n 1: any of several plants of the genus Baptisia [syn: {wild
          indigo}]
     2: dense shrub of moist riverbanks and flood plains of the
        eastern United States having attractive fragrant foliage
        and dense racemes of dark purple flowers [syn: {bastard
        indigo}, {Amorpha fruticosa}]
     3: an erect to spreading hairy shrub of the Pacific coast of
        the United States having racemes of red to indigo flowers
        [syn: {bastard indigo}, {Amorpha californica}]