Medium to dark red thallus, with branches primarily in one plane but frequently shifted, and one to many axes widely branched erratically in a lateral way, resulting in a flabellate or sub dichotomous appearance. The thallus, which is typically 200–300 µm thick near the apices, is made up of a cortex that is made up of multiple layers of irregularly shaped, smaller outward-facing ovoid cells, with the outermost cells in surface view closely packed. The medulla is made up of large, ovoid, and typically thick-walled cells, irregularly arranged and with intermixed small ovoid to elongate cells. Epilithic, holdfast discoid, 2–5 mm in diameter.