The western sword fern (Polystichum munitum) is a robust, evergreen fern native to the forests of western North America. It is identified by its arching fronds, which can grow up to five feet long, with leathery, lance-shaped leaflets featuring toothed edges and a characteristic sword-like appearance. While not edible, the plant held significance for Indigenous peoples of the Pacific Northwest, who used its fronds as bedding, food preparation mats, and coverings for food storage pits. Ecologically, the western sword fern is a key understory species in coniferous forests, contributing to soil stabilization, providing habitat for small animals, and enhancing biodiversity through its interactions with other forest species. It thrives in moist, shaded environments but is adaptable to a range of conditions.