Thallus: finely filamentous, in soft tufts, to 1(-6) mm high, red to purple-red to pink, branching somewhat dichotomous or irregular. Filaments gelatinous, 12-35 µm diam., to 50 µm near base. Cells mostly uniseriate, irregularly spherical, crescent-shaped to cylindrical, 6-13 µm diam., 3-13 µm long, irregularly spaced, each with single pink, red or purple-red stellate (star-shaped) plastid and one pyrenoid; enclosed in thick clear gelatinous -wall-. Attached by single basal cell and intermittent short single-celled rhizoids terminating in attachment pad