The scientific classification of Clematis and Gardenia 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. Clematis and Gardenia kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Clematis and Gardenia family is a major factor of Clematis and Gardenia 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. Clematis belongs to the family Ranunculaceae and Gardenia belongs to the family Rubiaceae.
While comparing scientific classification, Clematis and Gardenia genus and other classification are also important. Also, when you compare Clematis and Gardenia, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Clematis and other plant's genus is Gardenia. Clematis tribe is Anemoneae and Gardenia tribe is Gardenieae. Clematis clade is Not Available and order is Ranunculales whereas Gardenia clade is Angiosperms, Asterids and Eudicots and order is Gentianales. Every plant have subfamilies. Clematis subfamilies are, Ranunculoideae and Gardenia subfamilies are Ixoroideae. In this way you can compare scientific classification of Clematis and Gardenia and other products also.