Lindsaea linearis, commonly known as the Screw Fern, is a small, evergreen fern native to a variety of habitats in Australia, including moist areas in heathlands, open forests, and near swamps and rocks. It is particularly adapted to shaded or semi-shaded environments. This species was first described by Swedish botanist Olof Swartz in 1801. Screw Ferns typically grow to a modest size, with fronds reaching up to 20-40 cm in length. The plant’s appearance is characterized by its dark, wiry stems and light green, linear fronds that have a distinctive twisted or "screw-like" pattern.

Screw Ferns are valued for their unique foliage and adaptability, making them suitable for shaded garden areas, rockeries, and as ground cover in subtropical and temperate regions. They are relatively low maintenance, requiring moist, well-drained soil and protection from direct sunlight. While they prefer consistent moisture, they are somewhat drought-tolerant once established. Screw Ferns are not commonly associated with significant pest or disease problems, but they can suffer from root rot if overwatered or planted in poorly drained soils.CC BY-SA 4.0