The scientific classification of Earth Star and Allamanda 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. Earth Star and Allamanda kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Earth Star and Allamanda family is a major factor of Earth Star and Allamanda 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. Earth Star belongs to the family Bromeliaceae and Allamanda belongs to the family Apocynaceae.
While comparing scientific classification, Earth Star and Allamanda genus and other classification are also important. Also, when you compare Earth Star and Allamanda, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Cryptanthus and other plant's genus is Allamanda. Earth Star tribe is Not Available and Allamanda tribe is Apocyneae. Earth Star clade is Angiosperms, Commelinids and Monocots and order is Bromeliales whereas Allamanda clade is Angiosperms, Asterids and Eudicots and order is Gentianales. Every plant have subfamilies. Earth Star subfamilies are, Bromelioideae and Allamanda subfamilies are Rauvolfioideae. In this way you can compare scientific classification of Earth Star and Allamanda and other products also.