Native to (or naturalized in) Oregon:
- Deciduous shrub, 1-5 ft (0.3-1.5 m) high, densely branched; young twigs yellow-green, somewhat angled, older twigs gray with shreddy bark. Leaves alternate, simple, elliptical to ovate, 1.5-5 cm long, thin, pointed at tip, margins serrate, rarely entire; pale green on both surfaces, smooth or occasionally pubescent; petiole about 3 mm long. Flowers small, about 3 mm long, greenish-white to pinkish, globose to urn-shaped, solitary and axillary. Fruit slightly flattened, to 6-8 mm in diameter, dark purple, red, to black, without bloom, good flavored.
- Hardy to USDA Zone 5 Native range is from Alaska and British Columbia south through the Olympic and Cascade mountains to California and east to Ontario, Wyoming, South Dakota, and Minnesota, populations are also present in Michigan's Upper Peninsula and on the east side of Lake Superior.
- membranaceum: skin, membrane; parchment.