The scientific classification of Petunia and Haworthia 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. Petunia and Haworthia kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Petunia and Haworthia family is a major factor of Petunia and Haworthia 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. Petunia belongs to the family Solanaceae and Haworthia belongs to the family Liliaceae.
While comparing scientific classification, Petunia and Haworthia genus and other classification are also important. Also, when you compare Petunia and Haworthia, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Petunia and other plant's genus is Haworthia. Petunia tribe is Not Available and Haworthia tribe is Not Available. Petunia clade is Angiosperms, Asterids and Eudicots and order is Solanales whereas Haworthia clade is Angiosperms and Monocots and order is Asparagales. Every plant have subfamilies. Petunia subfamilies are, Petunioideae and Haworthia subfamilies are Asphodeloideae. In this way you can compare scientific classification of Petunia and Haworthia and other products also.