Blades are flabelliform, typically divided into many segments, and have two layers of rectangular cells with thin walls. The upper surface is faintly covered in chalk. Sharp, concentrated hair lines on the blades. Brown hairs coated the holdfast stump. Tetrasporangia regularly placed immediately above each hair line on the lower blade surface, generating sori without indusium in every glabrous zone. Blade height is 8–10 cm. brown-yellow.