Pteridium is a genus of ferns commonly known as bracken ferns. These plants are found in various habitats around the world, often thriving in disturbed areas like forests and grasslands. They have large, triangular fronds that can grow several feet tall and are known for their ability to spread quickly through underground rhizomes. Bracken ferns play a significant role in ecosystems, providing ground cover and habitat for various wildlife. However, they can also be invasive in some regions, outcompeting native plants. Additionally, certain species of Pteridium contain compounds that may be toxic to livestock if consumed in large quantities.