Buddleja officinalis, alias: closed fish flower, itching-relieving, fish tail grass, cypress, five-baqiang, Yang Bao tree, pheasant tail flower, fish scales, medicine poles, pain-relieving trees, carp flowers and plants, medicine roe, and iron broom. Branchlets have four edges, with slightly narrow wings on the edges; Young branches, leaves, petioles, inflorescences, bracts and bracteoles are densely covered with stellate short hairs and glandular hairs. The leaves are opposite, the leaves on the budding branches are alternate or nearly whorled, the leaves are membranous, ovate, elliptic to oblong-lanceolate, and the calyx often exists at the base; Seeds light brown, small, wingless. The flowering period is from April to October, and the fruiting period is from August to April of the following year. The whole plant has a little poison, which can anesthetize live fish and make it easy to catch, so it is called "Buddleja". Flowers are fragrant and beautiful, which are common and excellent ornamental plants in parks.
Poisonous derris, alias Baiyao root and Tripterygium wilfordii hoof, is the root, stem and leaf of Spatholobus suberectus, a leguminous plant, which grows in thickets or sparse forests on hillsides or streams.
Jatropha curcas, a highly toxic plant, is known as the "King of Poisonous Trees" and the most poisonous tree in the world. As long as the animal breaks its skin and bleeds and touches its poison, it will be killed immediately, hence its nickname "blood sealing throat".