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"] ["Affinitas"] [Class "Monadelphia" L. (1735), nom. inval.] see Class Monadelphia L. (1753), nom. inval. [Order "Monadelphia Pentandria" L. (1735), nom. inval.] see Order Monadelphia Pentandria L. (1753), nom. inval. [Genus "Xeraea" nom. inval.]