Coarse plant, 1 to 4 feet tall.  Stems bristly with stinging hairs.  Leaves not opposite each other, egg-shaped, toothed, 3 to 6 inches long, with long stalks.  Flowers tiny, white in crowded, branching clusters.  Blooms in late summer. Fruits tiny, greenish.

Plant of moist woodlands.  Occasional on the western slope of the Park.

Tiny white or green flowers in crowded branching clusters are typical of nettles.  Wood nettle is the only one with leaves that are alternate (not opposite).  Stinging hairs are also a good clue if you accidentally should touch the stem.  Clearweed is also found in woodlands, but has distinctive opposite leaves and no stinging hairs.  Stinging nettle prefers more open areas and also has opposite leaves.