Cabomba grandisCabomba grandis is a fossil species of aquatic plant in the family Cabombaceae.DescriptionThe cylindrical, smooth stems bear opposite, finely divided, dichotomously forked leaves.TaxonomyIt was published by John Strong Newberry in 1883.EtymologyThe specific epithet grandis means big or large. Compared to Cabomba gracilis, which was found in the same locality, it is significantly larger.