Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Biota "neomura" Domain Eukaryota Chatton, 1925 - eukaryotes "neokaryotes" - mitochondrial eukaryotes "neozoa" 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" "eudicots" "core eudicots" Superorder Rosanae Takht. (1967) "malvids" Order Brassicales Bromhead (1838) Tribe Lepidieae DC. (1821) Genus Lepidiumᵀ L. (1753) Lepidium campestre (Linnaeus) R. Br. - cream-anther field pepperwort Lepidium densiflorum Schrader - common pepperweed Lepidium graminifolium Linnaeus - grassleaf pepperweed Lepidium heterophyllum Bentham - purpleanther field pepperweed Lepidium hirtum (Linnaeus) Sm. - Mediterranean pepperweed Lepidium latifoliumᵀ Linnaeus - broadleaf pepperweed Lepidium neglectum Thellung Lepidium perfoliatum Linnaeus - clasping pepperweed Lepidium ruderale Linnaeus - roadside pepperweed Lepidium sativum Linnaeus - garden pepperwort Lepidium virginicum Linnaeus - peppergrass