Noun | 1. | ![]() rosid dicot genus - a genus of dicotyledonous plants family Saxifragaceae, Saxifragaceae, saxifrage family - a large and diverse family of evergreen or deciduous herbs; widely distributed in northern temperate and cold regions; sometimes includes genera of the family Hydrangeaceae pickaback plant, piggyback plant, Tolmiea menziesii, youth-on-age - vigorous perennial herb with flowers in erect racemes and having young plants develop at the junction of a leaf blade and the leafstalk |