Servian Wall
In ancient Roman religion and myth, the Querquetulanae or Querquetulanae virae were nymphs of the oak grove "(querquetum)" at a stage of producing green growth. Their sacred grove "(lucus)" was within the Porta Querquetulana, a gate in the Servian Wall. According to Festus, it was believed that in Rome there was once an oakwood within the Porta Querquetulana onto the greening of which presided the "virae Querquetulanae".