On siliceous rock in a stream corridor. Thallus thin, continuous-areolate, greenish, K+Y (very weakly). POL+ scattered yellowish granules or crystals in material below apothecia and in thallus cortex. Spores Mischoblastia-type, 8/ascus, hyaline becoming grey, 1-septate, ellipsoid, often swollen at septum, average size 22.1x11.4µm (n=9).