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 "Octandria" L. (1753), nom. inval.] 1 [Order "Octandria Monogynia" L. (1753), nom. inval.] 2 [Order "Octandria Digynia" L. (1753), nom. inval.] 3 [Order "Octandria Trigynia" L. (1753), nom. inval.] 4 [Order "Octandria Tetragynia" L. (1753), nom. inval.]