Olvar

Yavanna's word for the plants and plant-life in her care. After her husband Aulë created the Fathers of the Dwarves, she became concerned for the fate of both the kelvar (animals) and olvar (plants) at the hands of their descendants. She spoke of her fears to Manwë, who revealed that Eru intended that spirits should be sent to dwell among some of the olvar and protect them. This was the ultimate origin of the beings who came to be known as Ents.