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