Endangered and Threatened Wildlife and Plants; 6-Month Extension of Final Determination on the Proposed Threatened Status for Chorizanthe parryi

We, the U.S. Fish and Wildlife Service (Service), announce a 6-month extension of the final determination of whether to list the Chorizanthe parryi var. fernandina (San Fernando Valley spineflower), a plant species from southern California, as a threatened species. Along with this announcement to extend the final determination, we are also reopening the comment period on the proposed rule to list the species, for an additional 30 days. We are taking this action to extend the final determination based on substantial disagreement regarding the potential impact of Argentine ant invasion on the pollination ecology of C. parryi var. fernandina and scientific uncertainty related to establishment of C. parryi var. fernandina using introduction of seed into suitable, unoccupied areas. Comments previously submitted need not be resubmitted as they are already incorporated into the public record and will be fully considered in the final rule. We will submit a final listing determination to the Federal Register on or before March 15, 2018.