Photograph from Lewis and Clark Herbarium/Academy of Natural Sciences
Twinberry (Inkberry, Four-Line Honeysuckle, Black Twinberry, Bearberry Honeysuckle)
July 7, 1806, in Lewis and Clark County, Montana.
Erect, deciduous shrub with opposite leaves and both flowers and fruits in pairs growing from leaf axils. Flowers yellow, sometimes tinged red; about 0.5 in (1.3 cm) long. Leaves opposite, 2-5 in (5-12.5 cm) long, ovate, tapering at tip. Height: 2-10 ft (0.6-3 m).
Moist, shady places such as streamsides and canyon bottoms.
Alaska and British Columbia east to Quebec and south to southern California, Arizona, Utah, and Colorado.
The berries are edible but not particularly tasty.