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