Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies ["Vegetabile Regnum" nom. inval. - plant kingdom] see Kingdom Plantae Haeckel (1866) ["Publicae"] ["Monoclinia"] ["Diffinitas"] ["Indifferentismus"] [Class "Tetrandria" L. (1735), nom. inval.] see Class Tetrandria L. (1753), nom. inval. [Order "Tetrandria Tetragynia" L. (1735), nom. inval.] see Order Tetrandria Tetragynia L. (1753), nom. inval. [Genus "Ruppia" nom. inval.] see Genus Ruppia L. (1753)