The thallus stands upright, displaying a light red color. It grows by repeatedly emerging from prostrate basal filaments. Lateral branches ascend from axial cells situated below the tips, and the basal cells of whorl-like branchlets often develop more vigorously. Each axial cell has three whorl-like branchlets that branch out 4-8 times, and these either cover the central axis completely or leave the axial cells exposed between the whorls. The ultimate branches become slender, often resembling hairs, and the entire plant is coated with a clear, gel-like substance. The cells contain a single nucleus, and their rhodoplasts have a disc-like shape.