Wood pellet varieties include oak, maple, apple, alder, mesquite, cherry, maple, hickory, and pecan. Most pecan pie recipes include salt and vanilla as flavorings. Some plants, such as the macadamia nut and the pecan, were not domesticated until recently. Other hardwoods such as pecan, apple, maple and oak may also be used. Most tree species found in the area are pine, hickory, oak, pecan, and poplars. The seeds of the pecan are edible, with a rich, buttery flavor. In 1988, Oklahoma enacted an official state meal which included pecan pie. The team who sold the most pecan dessert dishes got $300 towards their till. Moist sites can grow tall forests dominated by elm and pecan. Alabama named the pecan the official state nut in 1982. Brownwood is located south of the center of Brown County, west of the Pecan Bayou. Scab is currently the most destructive disease affecting pecan trees untreated with fungicides. Herds of mustangs, wild horses, wolves and forests of pecan trees were described. The neighborhood of Pecan Plantation has a municipal airport (PCP). "texense" is found in the Southern United States, usually associated with pecan trees.