Vaccinium scoparium is a very small (3-5 mm), red berry, similar in shape to blueberries, found growing as a green ground-cover under high mountain coniferous forests. The stems are green and angled, and much less shrub-like than most other blueberry-like species, and are described as "broom-like" because they grow a lot of branches close together and upright, so that you could pull up a plant and imagine using it as a broom. The most usual common name for these is "grouseberry", but it is also known as "whortleberry", "littleleaf huckleberry", and even "grouse whortleberry" (for those who prefer some sort of indecisive compromise in their names).

They are very wide-spread and common, but the berries are very small, with just a few per plant, so that picking any good quantity would take quite a while. They are so small that it's hard to get the taste from a single berry; it is much better to pick several and eat them all at once, so you can fully taste them. Nevertheless, despite the tiny size and need to search over a large area of plants, I personally like the flavor of these a lot, especially if I can find them in the very ripe stage where they start to turn purpleish.