The scientific classification of Oatgrass and China Doll 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. Oatgrass and China Doll kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Oatgrass and China Doll family is a major factor of Oatgrass and China Doll 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. Oatgrass belongs to the family Poaceae and China Doll belongs to the family Bignoniaceae.
While comparing scientific classification, Oatgrass and China Doll genus and other classification are also important. Also, when you compare Oatgrass and China Doll, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Danthonia and other plant's genus is Radermachera. Oatgrass tribe is Aveneae and China Doll tribe is Tecomeae. Oatgrass clade is Angiosperms, Commelinids and Monocots and order is Poales whereas China Doll clade is Angiosperms, Asterids and Eudicots and order is Lamiales. Every plant have subfamilies. Oatgrass subfamilies are, Danthonioideae and China Doll subfamilies are Not Available. In this way you can compare scientific classification of Oatgrass and China Doll and other products also.