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 "Icosandria" L. (1753), nom. inval.] 1 [Order "Icosandria Monogynia" L. (1753), nom. inval.] 2 [Order "Icosandria Digynia" L. (1753), nom. inval.] 3 [Order "Icosandria Trigynia" L. (1753), nom. inval.] 4 [Order "Icosandria Pentagynia" L. (1753), nom. inval.] 5 [Order "Icosandria Polygynia" L. (1753), nom. inval.]