Lycopodiophyta is a division of vascular plants that includes clubmosses, quillworts, and spike mosses. These plants are characterized by their small, scale-like leaves and their ability to reproduce via spores rather than seeds. They are among the oldest groups of vascular plants, with a history dating back over 400 million years. Members of Lycopodiophyta typically thrive in moist, shaded environments, such as forests and wetlands. They play an important role in their ecosystems by contributing to soil formation and providing habitat for various organisms. Their unique reproductive structures, called strobili, are often found at the tips of their stems.