The scientific classification of Judas Tree and Periwinkle 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. Judas Tree and Periwinkle kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Judas Tree and Periwinkle family is a major factor of Judas Tree and Periwinkle 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. Judas Tree belongs to the family Fabaceae and Periwinkle belongs to the family Apocynaceae.
While comparing scientific classification, Judas Tree and Periwinkle genus and other classification are also important. Also, when you compare Judas Tree and Periwinkle, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Cercis and other plant's genus is Catharanthus. Judas Tree tribe is Cercideae and Periwinkle tribe is Not Available. Judas Tree clade is Angiosperms, Eudicots and Rosids and order is Fabales whereas Periwinkle clade is Not Available and order is Geraniales. Every plant have subfamilies. Judas Tree subfamilies are, Caesalpinioideae and Periwinkle subfamilies are Not Available. In this way you can compare scientific classification of Judas Tree and Periwinkle and other products also.