The scientific classification of Tree-of-Heaven and Globe Amaranth 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. Tree-of-Heaven and Globe Amaranth kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Tree-of-Heaven and Globe Amaranth family is a major factor of Tree-of-Heaven and Globe Amaranth 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. Tree-of-Heaven belongs to the family Simaroubaceae and Globe Amaranth belongs to the family Amaranthaceae.
While comparing scientific classification, Tree-of-Heaven and Globe Amaranth genus and other classification are also important. Also, when you compare Tree-of-Heaven and Globe Amaranth, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Ailanthus and other plant's genus is Gomphrena. Tree-of-Heaven tribe is Not Available and Globe Amaranth tribe is Not Available. Tree-of-Heaven clade is Angiosperms, Eudicots and Rosids and order is Sapindales whereas Globe Amaranth clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales. Every plant have subfamilies. Tree-of-Heaven subfamilies are, Not Available and Globe Amaranth subfamilies are Not Available. In this way you can compare scientific classification of Tree-of-Heaven and Globe Amaranth and other products also.