Synonyms: Badiera berteroana; Polygala ambigens; Polygala americana var. angustifolia; Polygala angustifolia (heterotypic); Polygala angustifolia f. ramosa; Polygala angustifolia var. linearifolia; Polygala bahiensis; Polygala brizoides; Polygala brizoides var. brizoides; Polygala brizoides var. latifolia; Polygala camporum; Polygala caripensis; Polygala cineraria; Polygala cinerea (heterotypic); Polygala cubensis; Polygala domingensis (heterotypic); Polygala huberiana; Polygala martii; Polygala monticola var. brizoides; Polygala orobus; Polygala peduncularis (heterotypic); Polygala planellasi; Polygala puberula (homotypic); Polygala pubescens; Polygala rottleriana; Polygala unguiculata; Polygala violacea (heterotypic); Polygala wrightii (heterotypic)