Clubmoss refers to a group of vascular plants belonging to the family Lycopodiaceae. These ancient plants are characterized by their small, scale-like leaves and spore-producing structures called strobili. Clubmosses thrive in moist, shaded environments, often found in forests and woodlands. Historically, clubmosses were abundant during the Carboniferous period, contributing to the formation of coal deposits. Today, they are considered living fossils, with some species still existing. Clubmosses reproduce through spores rather than seeds, making them distinct from most modern plants.