The Red List of US Oaks report details for the first time the distributions, population trends, and threats facing all 91 native oak species in the U.S. using the IUCN Red List threat assessment platform, including updated versions of previously published assessments. The publication serves as a baseline for our current understanding of the state of U.S. native oak trees and an authoritative guide for future conservation action. Sixteen species of oaks, all in the southern and western U.S., are now classified as Critically Endangered, Endangered or Vulnerable, with another four species deemed Near Threatened. For more information contact Diana Jerome.