USFWS are removing the plant Adiantum vivesii (no common name) from the Federal List of Endangered and Threatened Plants (List). This determination is based on a thorough review of the best available scientific and commercial data indicating that Adiantum vivesii is not a distinct species, but rather a sterile hybrid that does not have the capacity to establish a lineage that could be lost to extinction. USFWS have determined that Adiantum vivesii is not a discrete taxonomic entity and does not meet the definition of a species as defined under the Act, and that its original listing was based on data or interpretations of data that were in error; therefore, USFWS are delisting it. This rule is effective 23 September 2022. POC is Edwin Muñiz, Field Supervisor, Caribbean Ecological Services Field Office, P.O. Box 491, Boquerón, PR 00622; Caribbean_es@fws.gov; tel: 787-405-3641. (Federal Register 24 August 2022 [Rule] Pages 51928-51932)