The scientific classification of Black Walnut and Brugmansia 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. Black Walnut and Brugmansia kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Black Walnut and Brugmansia family is a major factor of Black Walnut and Brugmansia 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. Black Walnut belongs to the family Juglandaceae and Brugmansia belongs to the family Solanaceae.
While comparing scientific classification, Black Walnut and Brugmansia genus and other classification are also important. Also, when you compare Black Walnut and Brugmansia, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Juglans and other plant's genus is Brugmansia. Black Walnut tribe is Juglandeae and Brugmansia tribe is Datureae. Black Walnut clade is Angiosperms, Eudicots and Rosids and order is Juglandales whereas Brugmansia clade is Angiosperms, Asterids and Eudicots and order is Solanales. Every plant have subfamilies. Black Walnut subfamilies are, Juglandinae and Brugmansia subfamilies are Solanoideae. In this way you can compare scientific classification of Black Walnut and Brugmansia and other products also.