Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Biota "neomura" Domain Eukaryota Chatton, 1925 - eukaryotes neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes neozoa Cavalier-Smith 1993 Superkingdom Corticata Lankester, 1878 Kingdom Plantae Haeckel (1866) - plants Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants Infrakingdom Streptophyta C. Jeffrey (1967) Superphylum Embryophyta "polysporangiophytes" Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998) - vascular plants [Subphylum] Euphyllophytina Infraphylum "Radiatopses" Kenrick & Crane (1997) "lignophytes" Class Spermatopsida "core seed plants" Subclass Magnoliidae Novák ex Takht. (1967) - angiosperms "core angiosperms" Superorder Magnolianaeᵀ Takht. (1967) Order Piperales Bercht. & J. Presl (1820) 1 Family Saururaceae F. Voigt (1811), nom. cons. - lizard's-tail family 2 Family Piperaceaeᵀ Giseke (1792), nom. cons. - pepper family 3.1 Family Aristolochiaceae Juss. (1789) - birthwort family 3.2 Family Lactoridaceae Engl. (1888), nom. cons. [monotypic] - Lactoris family 3.3 Family Hydnoraceae C. Agardh (1821), nom. cons. - Hydnora family