Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies ["Vegetabile Regnum" nom. inval. - plant kingdom] see Kingdom Plantae Haeckel (1866) ["Publicae"] ["Diclinia"] [Class "Monoecia" L. (1735), nom. inval.] see Class Monoecia L. (1753), nom. inval. [Order "Monoecia Pentandria" L. (1735), nom. inval.] see Order Monoecia Pentandria L. (1753), nom. inval. [Genus "Xanthium" nom. inval.] see Genus Xanthium L. (1753)