Sanguineodiscus species have crustose, or thalli, which can be white to dark gray. The cortex is , and the thallus and contain Sedifolia-gray but lack anthraquinones. The apothecia are or seemingly with a thin always present. The is typically dark to pale red, though some individuals may have black or brown discs without anthraquinones. Ascospores are , ellipsoid, and have medium to large long septa.
