The scientific classification of American Elm and Eucalyptus 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. American Elm and Eucalyptus kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. American Elm and Eucalyptus family is a major factor of American Elm and Eucalyptus 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. American Elm belongs to the family Ulmaceae and Eucalyptus belongs to the family Myrtaceae.
While comparing scientific classification, American Elm and Eucalyptus genus and other classification are also important. Also, when you compare American Elm and Eucalyptus, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Ulmus and other plant's genus is Eucalyptus. American Elm tribe is Not Available and Eucalyptus tribe is Eucalypteae. American Elm clade is Angiosperms, Eudicots and Rosids and order is Urticales whereas Eucalyptus clade is Not Available and order is Myrtales. Every plant have subfamilies. American Elm subfamilies are, Not Available and Eucalyptus subfamilies are Myrtoideae. In this way you can compare scientific classification of American Elm and Eucalyptus and other products also.