The scientific classification of Toadflax and 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. Toadflax and Lettuce kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Toadflax and Lettuce family is a major factor of Toadflax and 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. Toadflax belongs to the family Scrophulariaceae and Lettuce belongs to the family Asteraceae.
While comparing scientific classification, Toadflax and Lettuce genus and other classification are also important. Also, when you compare Toadflax and Lettuce, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Linaria and other plant's genus is Lactuca. Toadflax tribe is Antirrhineae and Lettuce tribe is Cichorieae. Toadflax clade is Angiosperms, Asterids and Eudicots and order is Scrophulariales whereas Lettuce clade is Angiosperms, Asterids and Eudicots and order is Asterales. Every plant have subfamilies. Toadflax subfamilies are, Not Available and Lettuce subfamilies are Not Available. In this way you can compare scientific classification of Toadflax and Lettuce and other products also.