The scientific classification of Tree-of-Heaven and Mock Orange 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 Mock Orange kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Tree-of-Heaven and Mock Orange family is a major factor of Tree-of-Heaven and Mock Orange 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 Mock Orange belongs to the family Rutaceae.
While comparing scientific classification, Tree-of-Heaven and Mock Orange genus and other classification are also important. Also, when you compare Tree-of-Heaven and Mock Orange, 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 Philadlephus. Tree-of-Heaven tribe is Not Available and Mock Orange tribe is Philadelpheae. Tree-of-Heaven clade is Angiosperms, Eudicots and Rosids and order is Sapindales whereas Mock Orange clade is Angiosperms, Asterids and Eudicots and order is Cornales. Every plant have subfamilies. Tree-of-Heaven subfamilies are, Not Available and Mock Orange subfamilies are Hydrangeoideae. In this way you can compare scientific classification of Tree-of-Heaven and Mock Orange and other products also.