Genus Cystopteris comprises a group of ferns that are commonly found in temperate regions throughout the world. Some of the synonyms that are associated with this genus include bladder fern, fragile fern, brittle maidenhair fern, and rock brake. These ferns are known for their delicate, frond-like leaves that are typically olive-green or paler in color. They thrive in moist, shaded areas, such as forests, woodlands, and rocky slopes. The various species of Genus Cystopteris are distinguished by their unique characteristics, including the shape and size of their leaves, spores, and fronds. They play an important role in the ecosystem by providing food and habitat for many species of wildlife.