The scientific classification of Cardon and Hatiora 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 Hatiora kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Cardon and Hatiora family is a major factor of Cardon and Hatiora 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 Hatiora belongs to the family Cactaceae.
While comparing scientific classification, Cardon and Hatiora genus and other classification are also important. Also, when you compare Cardon and Hatiora, 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 Hatiora. Cardon tribe is Pachycereeae and Hatiora tribe is Rhipsalideae. Cardon clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales whereas Hatiora clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales. Every plant have subfamilies. Cardon subfamilies are, Cactoideae and Hatiora subfamilies are Cactoideae. In this way you can compare scientific classification of Cardon and Hatiora and other products also.