Taxodiaceae belongs to gymnosperms, including 10 genus and 16 species. Taxodiaceae is an evergreen or deciduous tree with straight trunk ends and large branches in whorls or sub-whorls. Leaves are spirally arranged, scattered, rarely cross-opposite (Metasequoia glyptostroboides), lanceolate, subulate, scaly or strip-shaped, with the same type or two types of branches and leaves on the same tree. These cones are monoecious and monoecious. Seeds flat or trigonous.
Mainly distributed in East Asia, North America and Oceania. There are 5 genera and 7 species in China, and 4 genera and 7 species are introduced and cultivated. All existing genera are ancient taxa. Taxodiaceae plants are tall and beautiful, and most species have high ornamental value. For example, Metasequoia glyptostroboides, a living fossil, is a famous ornamental tree species in the courtyard. Taxodium ascendens, Taxodium ascendens and other branches and leaves are stretched, dignified and beautiful, and they are rare aquatic ornamental trees for garden landscaping.