The scientific classification of Oatgrass and Verbena 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 Verbena kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Oatgrass and Verbena family is a major factor of Oatgrass and Verbena 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 Verbena belongs to the family Verbenaceae.
While comparing scientific classification, Oatgrass and Verbena genus and other classification are also important. Also, when you compare Oatgrass and Verbena, 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 Verbena. Oatgrass tribe is Aveneae and Verbena tribe is Not Available. Oatgrass clade is Angiosperms, Commelinids and Monocots and order is Poales whereas Verbena clade is Not Available and order is Lamiales. Every plant have subfamilies. Oatgrass subfamilies are, Danthonioideae and Verbena subfamilies are Not Available. In this way you can compare scientific classification of Oatgrass and Verbena and other products also.