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"] ["Subordinatio"] [Class "Didynamia" L. (1735), nom. inval.] see Class Didynamia L. (1753), nom. inval. [Order "Gymnospermia" L. (1735), nom. inval.] see Order Gymnospermia L. (1753), nom. inval. ["Calyces bilabiati"] [Genus "Dracocephalum" nom. inval.] see Genus Dracocephalum L. (1753)