The scientific classification of Oatgrass and Bouteloua Gracilis 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 Bouteloua Gracilis kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Oatgrass and Bouteloua Gracilis family is a major factor of Oatgrass and Bouteloua Gracilis 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 Bouteloua Gracilis belongs to the family Poaceae.
While comparing scientific classification, Oatgrass and Bouteloua Gracilis genus and other classification are also important. Also, when you compare Oatgrass and Bouteloua Gracilis, 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 Bouteloua. Oatgrass tribe is Aveneae and Bouteloua Gracilis tribe is Cynodonteae. Oatgrass clade is Angiosperms, Commelinids and Monocots and order is Poales whereas Bouteloua Gracilis clade is Angiosperms, Commelinids and Monocots and order is Cyperales. Every plant have subfamilies. Oatgrass subfamilies are, Danthonioideae and Bouteloua Gracilis subfamilies are Chloridoideae. In this way you can compare scientific classification of Oatgrass and Bouteloua Gracilis and other products also.