Lycopodium clavatum (common club moss, stag's-horn clubmoss, running clubmoss, or ground pine) is the most widespread species in the genus Lycopodium in the clubmoss family.
Lycopodium clavatum is a spore-bearing vascular plant, growing mainly prostrate along the ground with stems up to 1 m (39 in) long; the stems are much branched, and densely clothed with small, spirally arranged microphyll leaves. The leaves are 3–5 mm long and 0.7–1 mm broad, tapered to a fine hair-like white point. The branches ...