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 1.5-5m and has lance-shaped leaves 5-12cm long. The fruits of osoberry are edible and resemble small plums which are dark blue when ripe. Osoberry is an erect, loosely branched shrub reaching 15 feet (4.6m) in height. Leaves are alternate, simple, deciduous; generally elliptical or oblong, 2-5 inches (5.1-12.7cm), light green and smooth above and paler below; margins are entire to wavy; fresh foliage smells and may taste like cucumber. Among the first plants to leaf-out in the spring. The plants are dioecious; male and female flowers occur on different plants. The flowers are whitish-green, bell-shaped, often appear in late winter before the leaves, and are about 1cm across. The bitter-tasting fruit occurs in ovoid drupes up to 0.5 inches (1.3cm) long, orange or yellow when young but blue-black when mature; borne on a red stem. The twig is slender, green turning to reddish brown, pith chambered, conspicuous orange lenticles. Bark is smooth, reddish brown to dark gray (Wikipedia). Photo credit: Walter Siegmund CC BY-SA 3.0.