extinction due to some of the aforementioned threats. They filed a petition on October 9, 2008 for this species to be added to the Endangered Species Act. Causes of threat There are a number of threats to this plant. Because it is a marshland plant, it needs ongoing and abundant access to water. Unfortunately, the environments that it resides in are susceptible to drought. Water availability is dependent on yearly percolation patterns. Habitat loss is also a cause of threat, as it results in competition with new introduced and sometimes invasive species. References wrightii Flora of New Mexico Flora of the Chihuahuan Desert Flora of Arizona Flora of Chihuahua (state) Flora of Sonora Flora of Texas Plants described in 1853 Taxa named by Asa Gray