Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.
Thallus: consisting of superficial hyphae (subiculum), dark brown to black photobiont: absent Perithecia: arising singly or in small groups, hemispherical, black, semi-immersed in the thallus, c. 0.3-0.5 mm diam., base 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. 1 micrometer wide, not inspersed with oil droplets asci: clavate, c. 90-130 x 15-25 micrometer, with 8, irregularly arranged ascospores ascospores: hyaline, clavate to narrowly ellipsoid, 1-septate with a supramedian euseptum, 35-55 x 12-16 micrometer; walls: not ornamented, with a c. 3-5 micrometer wide gelatinous sheath Spot tests: all negative, UV negative Secondary metabolites: none detected. Substrate and ecology: on bark and wood of various woody plants, including Idria and Quercus World distribution: so far known from wood in Canada and northern U.S.A. Sonoran distribution: on Idria and Quercus in Baja California and in Baja California Sur.