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