The scientific classification of Red Fescue and Lamb's Lettuce 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. Red Fescue and Lamb's Lettuce kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Red Fescue and Lamb's Lettuce family is a major factor of Red Fescue and Lamb's Lettuce 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. Red Fescue belongs to the family Poaceae and Lamb's Lettuce belongs to the family Valerianaceae.
While comparing scientific classification, Red Fescue and Lamb's Lettuce genus and other classification are also important. Also, when you compare Red Fescue and Lamb's Lettuce, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Festuca and other plant's genus is Valerianella. Red Fescue tribe is Not Available and Lamb's Lettuce tribe is Valerianeae. Red Fescue clade is Angiosperms, Commelinids and Monocots and order is Cyperales whereas Lamb's Lettuce clade is Angiosperms, Asterids and Eudicots and order is Dipsacales. Every plant have subfamilies. Red Fescue subfamilies are, Not Available and Lamb's Lettuce subfamilies are Valerianoideae. In this way you can compare scientific classification of Red Fescue and Lamb's Lettuce and other products also.