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 Cryptogamia L. (1753)] [Cryptophyta Link (1824)] [Order Algae L. (1753)] [Genus Verrucaria Weber ex F.H. Wigg. (1780), nom. illeg.] ["Verrucania leucocephala" Fr. (1821), nom. inval.] see Verrucaria leucocephala (Ehrh. ex Pers.) Ach. (1803)