Noun | 1. | ![]() rosid dicot genus - a genus of dicotyledonous plants family Rutaceae, rue family, Rutaceae - a family of dicotyledonous plants of order Geraniales; have flowers that are divide into four or five parts and usually have a strong scent herb of grace, rue, Ruta graveolens - European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy |