Polystichum is a genus of ferns commonly known as the shield ferns. They are characterized by their distinctive, feathery fronds that often have a glossy appearance. These ferns thrive in a variety of habitats, including woodlands, forests, and rocky areas, and are known for their ability to tolerate shade and moist conditions. There are over 200 species within the Polystichum genus, found primarily in temperate regions around the world. They are popular in gardens and landscaping due to their attractive foliage and low maintenance requirements. Some species are also used in traditional medicine for their potential health benefits.