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