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