The Claret ash or Raywood ash is a cultivar of ash tree, a seedling variant of the Caucasian ash (Fraxinus angustifolia subsp. oxycarpa). The original seedling was discovered near a group of assorted ash trees in Sewell's nursery in the Mount Lofty Ranges in South Australia about 1910, and later grown at the nearby property Raywood (former home of the Downer family). The tree was introduced to Britain in 1928 and to North America in 1956, although it did not become widely available there until 1979.