Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.

Thallus: continuous, smooth, immersed in the substrate, whitish photobiont: absent Perithecia: arising singly or more often in small groups, hemispherical, black, semi-immersed in the thallus, 0.3-0.5 mm diam, base slightly rounded or applanate ascomatal wall: black, continuous below the hamathecium, with elongated cells in the corners (lophiostomoid) hamathecium: branched pseudoparaphyses, cellular, persistent, anastomosing above the asci; filaments: c. 2 micrometer wide, in a gelatinous matrix, not inspersed with oil droplets asci: clavate, c. 50-60 x 15-25 micrometer, with 8, irregularly arranged ascospores ascospores: blackish brown, pyriform, 1-septate with a submedian euseptum, 14-18 x 7-9 micrometer; walls: not ornamented, with a c. 2-3 micrometer wide gelatinous sheath Spot tests: all negative, UV negative Secondary metabolites: none detected. Substrate and ecology: on bark of unknown woody plant World distribution: known from temperate North America, possibly nearly endemic Sonoran distribution: only collected once in southern Arizona.