The scientific classification of Needle Grass and Switchgrass 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. Needle Grass and Switchgrass kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Needle Grass and Switchgrass family is a major factor of Needle Grass and Switchgrass 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. Needle Grass belongs to the family Poaceae and Switchgrass belongs to the family Poaceae.
While comparing scientific classification, Needle Grass and Switchgrass genus and other classification are also important. Also, when you compare Needle Grass and Switchgrass, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Stipa and other plant's genus is Panicum. Needle Grass tribe is Stipeae and Switchgrass tribe is Paniceae. Needle Grass clade is Angiosperms, Commelinids and Monocots and order is Cyperales whereas Switchgrass clade is Angiosperms, Commelinids and Monocots and order is Cyperales. Every plant have subfamilies. Needle Grass subfamilies are, Pooideae and Switchgrass subfamilies are Panicoideae. In this way you can compare scientific classification of Needle Grass and Switchgrass and other products also.