Rock lace fern
The rhizome is long and wide, with a diameter of 5 mm and brown hair. The petiole is amber and its base is light brown. The entire petiole has a lot of hair, and when it gets older, the hair falls and leaves its traces. The petiole is 30 to 60 cm long. The leaf blades are 30 to 60 cm in length and 15 to 30 cm in width. As a whole, they are egg-shaped needle-shaped to egg-shaped, usually single-winged compound leaves with thick grass and yellowish green to dark green. The wing pieces are usually 20 pairs or less, the shape is a linear needle shape, the tip gradually narrows, and finally the tail extends. The base is wide wedged or rounded and may or may not have a handle. The edges of the wings are shallow or deeply winged, and the edges of the wings are serrated, with short hairs on the middle of the surface and on the entire back. The sporangia are near the edge of the debris, but the envelope edge is away from the leaf edge and inside. The envelope is about 1 mm in length and width and has hair.