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 "Polyandria" L. (1753), nom. inval.] 1 [Order "Polyandria Monogynia" L. (1753), nom. inval.] 2 [Order "Polyandria Digynia" L. (1753), nom. inval.] 3 [Order "Polyandria Trigynia" L. (1753), nom. inval.] 4 [Order "Polyandria Tetragynia" L. (1753), nom. inval.] 5 [Order "Polyandria Pentagynia" L. (1753), nom. inval.] 6 [Order "Polyandria Hexagynia" L. (1753), nom. inval.] 7 [Order "Polyandria Polygynia" L. (1753), nom. inval.]