Umbellulone is a monoterpene ketone that is found in the leaves of Umbellularia californica. The larvae feed on "Umbellularia californica". In 2013 a new possible application of Umbellularia californica came to light. The oil of Umbellularia californica contains 40% to 60% of umbellulone. "Umbellularia californica" is also used in woodworking. Umbellularia californica is a tree native to the coastal forest of California. Only one native species from the laurel family, "Umbellularia californica", remains in California today. Species of "Notholithocarpus", "Arbutus menziesii", and "Umbellularia californica" can be canopy species in several areas. Only one native species from the Laurel family (Lauraceae), "Umbellularia californica," remains in California today. In California, California bay laurel ("Umbellularia californica") seems to be the main source of inoculum. Shortly after that the present name was given by Nuttal, Umbellularia californica. California buckeye ("Aesculus californica"), California bay laurel ("Umbellularia californica") and California walnut ("Juglans californica").