Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.
Thallus: absent or immersed in the substrate upper surface: if present, a whitish gray discoloration relative to adjacent bark surface, dull; photobiont: absent Perithecia: hemispherical or elongated due to the wood veins, black, semi-immersed in the substrate, c. 1 mm diam., often flattened ascomatal wall: black, continuous below the hamathecium, ostiole papillate hamathecium: unbranched paraphyses (or branched at tips), not anastomosing above the asci; filaments: c. 1 µm wide, not inspersed with oil droplets, gelatinized, IKI + blue asci: clavate, c. 50-60 x 8-10 µm, with 8, uniseriately arranged ascospores ascospores: brown, broadly ellipsoid, 1-septate with a median euseptum, cell walls much thickened leaving angular lumina, 13-16 x 6-8 µm; walls: not ornamented, without a gelatinous sheath Pycnidia: black, immersed, wall blackened only in the upper part conidia: filiform, hyaline, 6-10 x 0.2-0.4 µm Spot tests: all negative, UV negative Secondary products: none detected. Substrate and ecology: on bark and wood of Lycium World distribution: previously only known from SE USA and tropical America, but also recently found in Papua New Guinea (Aptroot, unpublished) Sonoran distribution: only collected once on the Channel Islands in southern California on Lycium.