Cylindropuntia rosea (DC.) Backeb, (Cactaceae): a new generic alien record in the flora of Saudi Arabia

Cylindropuntia rosea (DC.) Backeb. (Cactaceae) is a cactus and invasive species native to Mexico. This is the first record of the genus in Saudi Arabia. The alien species was found near Jebel Hizna, Baljurashi region, southwestern Saudi Arabia. Information about the species' habitat, distribution, and morphological description and its illustration are presented. The presence of Cylindropuntia rosea increased the probability of finding other species belonging to the genus Cylindropuntia in the country. However, if this species gets established in different areas of the Kingdom, it could become a serious invasive plant that has negative impacts on livestock and human. Therefore, tracking and controlling the invasion of this species is recommended.