The scientific classification of Fountaingrass and Flame-of-the-forest 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. Fountaingrass and Flame-of-the-forest kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Fountaingrass and Flame-of-the-forest family is a major factor of Fountaingrass and Flame-of-the-forest 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. Fountaingrass belongs to the family Poaceae and Flame-of-the-forest belongs to the family Fabaceae.
While comparing scientific classification, Fountaingrass and Flame-of-the-forest genus and other classification are also important. Also, when you compare Fountaingrass and Flame-of-the-forest, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Pennisetum and other plant's genus is Butea. Fountaingrass tribe is Paniceae and Flame-of-the-forest tribe is Phaseoleae. Fountaingrass clade is Angiosperms, Commelinids and Monocots and order is Cyperales whereas Flame-of-the-forest clade is Angiosperms, Eudicots and Rosids and order is Fabales. Every plant have subfamilies. Fountaingrass subfamilies are, Panicoideae and Flame-of-the-forest subfamilies are Faboideae. In this way you can compare scientific classification of Fountaingrass and Flame-of-the-forest and other products also.