The scientific classification of Red Pitaya and Meadow Barley 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 Meadow Barley kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Red Pitaya and Meadow Barley family is a major factor of Red Pitaya and Meadow Barley 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 Meadow Barley belongs to the family Poaceae.
While comparing scientific classification, Red Pitaya and Meadow Barley genus and other classification are also important. Also, when you compare Red Pitaya and Meadow Barley, 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 Hordeum. Red Pitaya tribe is Cacteae and Meadow Barley tribe is Not Available. Red Pitaya clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales whereas Meadow Barley clade is Angiosperms, Commelinids and Monocots and order is Cyperales. Every plant have subfamilies. Red Pitaya subfamilies are, Cactoideae and Meadow Barley subfamilies are Not Available. In this way you can compare scientific classification of Red Pitaya and Meadow Barley and other products also.