Endangered and Threatened Wildlife and Plants; Delisting of Agave arizonica (Arizona agave) From the Federal List of Endangered and Threatened Wildlife and Plants: Final rule.

We, the U.S. Fish and Wildlife Service (Service), under the Endangered Species Act of 1973, as amended (Act), have determined that it is appropriate to remove Agave arizonica (Arizona agave) from the Federal List of Endangered and Threatened Wildlife and Plants. This determination is based on a thorough review of all available data, which indicate that this plant is not a discrete taxonomic entity and does not meet the definition of a species under the Act. Evidence collected subsequent to the listing indicates that plants attributed to Agave arizonica do not constitute a distinct species but rather are individuals that have resulted from recent and sporadic instances of hybridization between two species. Current taxonomic practice is not to recognize such groups of individuals as a species. Since Agave arizonica is not recognized as a species, it no longer qualifies for protection under the Act.