The scientific classification of Rhubarb and Katsura Tree 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. Rhubarb and Katsura Tree kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Rhubarb and Katsura Tree family is a major factor of Rhubarb and Katsura Tree 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. Rhubarb belongs to the family Polygonaceae and Katsura Tree belongs to the family Cercidiphyllaceae.
While comparing scientific classification, Rhubarb and Katsura Tree genus and other classification are also important. Also, when you compare Rhubarb and Katsura Tree, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Rheum and other plant's genus is Cercidiphyllum. Rhubarb tribe is Not Available and Katsura Tree tribe is Not Available. Rhubarb clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales whereas Katsura Tree clade is Angiosperms and Eudicots and order is Hamamelidales. Every plant have subfamilies. Rhubarb subfamilies are, Not Available and Katsura Tree subfamilies are Not Available. In this way you can compare scientific classification of Rhubarb and Katsura Tree and other products also.