The Lost Pines Forest is a belt of loblolly pines (Pinus taeda) in the U.S. state of Texas, near the town of Bastrop. The stand of pines is unique in Texas because it is a disjunct population of trees that is more than separated from, and yet closely genetically related to, the vast expanse of pine trees of the Piney Woods region that covers parts of Texas, Arkansas, Louisiana, and Oklahoma.