Three new records of naturalized plants in Guangxi and analyses on their invasiveness.
Three species of naturalized plants were reported as new records to Guangxi of China, i.e. Amaranthus palmen, Ipomoea hederifolia and Paspalum wettsteinii. Amaranthus palmeri is an unconsciously introduced exotic species, which was listed in the fourth batch of exotic invasive plants in China by the Ministry of Environmental Protection of the People's Republic of China and Chinese Academy of Sciences in 2016. Ipomoea hederifolia and Paspalum wettsteinii are deliberately introduced exotic species, and established in natural habitats and may become potential invasive plants. The distribution, growth characteristics and propagation properties of the three exotic species were introduced; their spread and invasiveness were also analyzed and discussed in this article. The discovery for the three naturalized plants in natural habitats provides information for prevention and controlling invasive plants in Guangxi.