The scientific classification of Cardon and Brugmansia 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. Cardon and Brugmansia kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Cardon and Brugmansia family is a major factor of Cardon and Brugmansia 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. Cardon belongs to the family Cactaceae and Brugmansia belongs to the family Solanaceae.
While comparing scientific classification, Cardon and Brugmansia genus and other classification are also important. Also, when you compare Cardon and Brugmansia, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Pachycereus and other plant's genus is Brugmansia. Cardon tribe is Pachycereeae and Brugmansia tribe is Datureae. Cardon clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales whereas Brugmansia clade is Angiosperms, Asterids and Eudicots and order is Solanales. Every plant have subfamilies. Cardon subfamilies are, Cactoideae and Brugmansia subfamilies are Solanoideae. In this way you can compare scientific classification of Cardon and Brugmansia and other products also.