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