The scientific classification of Allamanda and Crapemyrtle 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. Allamanda and Crapemyrtle kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Allamanda and Crapemyrtle family is a major factor of Allamanda and Crapemyrtle 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. Allamanda belongs to the family Apocynaceae and Crapemyrtle belongs to the family Lythraceae.
While comparing scientific classification, Allamanda and Crapemyrtle genus and other classification are also important. Also, when you compare Allamanda and Crapemyrtle, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Allamanda and other plant's genus is Lagerstroemia. Allamanda tribe is Apocyneae and Crapemyrtle tribe is Lagerstroemieae. Allamanda clade is Angiosperms, Asterids and Eudicots and order is Gentianales whereas Crapemyrtle clade is Angiosperms, Eudicots and Rosids and order is Myrtales. Every plant have subfamilies. Allamanda subfamilies are, Rauvolfioideae and Crapemyrtle subfamilies are Lagerstroemieae. In this way you can compare scientific classification of Allamanda and Crapemyrtle and other products also.