Clearweed,  Pilea pumila
Urticaceae or Nettle Family

Leaves Small plant, usually under a foot tall.  Flowers tiny, white or greenish in short, crowded  clusters.  Stems and leafstalks smooth, translucent.  Leaves opposite each other, egg-shaped, long-stalked, with large rounded teeth and deeply embossed veins.  Blooms in late summer and fall.

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

Tiny white or green flowers in crowded clusters are typical of nettles.  Clearweed is unusual in not having stinging hairs.  The beautifully embossed leaves is also a good identifying character.  Wood nettle is also found in woodlands, but has leaves that are not opposite and stinging hairs.  Stinging nettle prefers more open areas and also stings. False nettle also prefers more open areas and has orderly, cylindrical flower stalks with leaves on the ends. Three-seeded mercury and Virginia copperleaf have similar shiny leaves, but very different flowers.