The scientific classification of Grapefruit and Blue Fescue 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. Grapefruit and Blue Fescue kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Grapefruit and Blue Fescue family is a major factor of Grapefruit and Blue Fescue 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. Grapefruit belongs to the family Rutaceae and Blue Fescue belongs to the family Poaceae.
While comparing scientific classification, Grapefruit and Blue Fescue genus and other classification are also important. Also, when you compare Grapefruit and Blue Fescue, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Citrus and other plant's genus is Festuca. Grapefruit tribe is Not Available and Blue Fescue tribe is Poeae. Grapefruit clade is Dicotyledonous and order is Sapindales whereas Blue Fescue clade is Angiosperms, Commelinids and Monocots and order is Cyperales. Every plant have subfamilies. Grapefruit subfamilies are, Rosoideae and Blue Fescue subfamilies are Pooideae. In this way you can compare scientific classification of Grapefruit and Blue Fescue and other products also.