USFWS are removing Colorado hookless cactus (Sclerocactus glaucus) from the Federal List of Endangered and Threatened Plants. Recent taxonomic studies have indicated that the currently listed entity is actually two species: Sclerocactus glaucus and Sclerocactus dawsoniae (previously identified as S. dawsonii in the proposed rule). After a review of the best available scientific and commercial information, they find that delisting Colorado hookless cactus is warranted. Their review indicates that the threats to the Colorado hookless cactus have been eliminated or reduced to the point that the species no longer meets the definition of an endangered or threatened species under the ESA. Accordingly, the prohibitions and conservation measures provided by the Act, particularly through sections 4 and 7, will no longer apply to the Colorado hookless cactus. This rule is effective 30 June 2025. POC is Nathan Darnall, tele 970-628-7181. (Federal Register 29 May 2025 [Rule] Pages 22650-22670)