The scientific classification of Japanese Barberry and Eastern Cottonwood 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. Japanese Barberry and Eastern Cottonwood kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Japanese Barberry and Eastern Cottonwood family is a major factor of Japanese Barberry and Eastern Cottonwood 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. Japanese Barberry belongs to the family Berberidaceae and Eastern Cottonwood belongs to the family Salicaceae.
While comparing scientific classification, Japanese Barberry and Eastern Cottonwood genus and other classification are also important. Also, when you compare Japanese Barberry and Eastern Cottonwood, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Berberis and other plant's genus is Populus. Japanese Barberry tribe is Not Available and Eastern Cottonwood tribe is Not Available. Japanese Barberry clade is Angiosperms and Eudicots and order is Ranunculales whereas Eastern Cottonwood clade is Angiosperms, Eudicots and Rosids and order is Salicales. Every plant have subfamilies. Japanese Barberry subfamilies are, Not Available and Eastern Cottonwood subfamilies are Salicoideae. In this way you can compare scientific classification of Japanese Barberry and Eastern Cottonwood and other products also.