Oemleria cerasiformis, a shrub commonly known as osoberry or Indian plum, is the sole species in genus Oemleria. Native to the Pacific coast and ranges of North America, from British Columbia, Canada to Santa Barbara County, California, U.S.A., it is among the first plants to leaf out and flowers early in the spring. It reaches a height of 1.5–5 m and has lance-shaped leaves 5–12 cm long.