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