The scientific classification of Pepperwort and Dame's Rocket includes the entire classification chart that includes kingdom, family, clade, tribe etc. A kingdom is the second highest taxonomic rank. A taxonomic rank is the level that a living organisms are placed in hierarchical level of arrangement of life forms. All the living organisms are divided into kingdoms. Plant kingdom is a main classification of living organisms that include all plants. There are six kingdoms which are: Plantae, Animalia, Fungi, Protista, Aschaea/Archaeabacteria and Bacteria Eubacteria. Pepperwort and Dame's Rocket kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Pepperwort and Dame's Rocket family is a major factor of Pepperwort and Dame's Rocket Scientific Classification. Plant family helps you narrow the search of your plants. It also gives you idea about, how the plant looks, how the seed will be like etc. These two plant families can be different or same. Pepperwort belongs to the family Marsileaceae and Dame's Rocket belongs to the family Brassicaceae.
While comparing scientific classification, Pepperwort and Dame's Rocket genus and other classification are also important. Also, when you compare Pepperwort and Dame's Rocket, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Marsilea and other plant's genus is Hesperis. Pepperwort tribe is Lapidieae and Dame's Rocket tribe is Hylocereeae. Pepperwort clade is Angiosperms, Eudicots and Rosids and order is NA whereas Dame's Rocket clade is Angiosperms, Asterids and Eudicots and order is Brassicales. Every plant have subfamilies. Pepperwort subfamilies are, NA and Dame's Rocket subfamilies are Cactoideae. In this way you can compare scientific classification of Pepperwort and Dame's Rocket and other products also.