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: hemispherical, black, immersed in groups of 1-5 below clypeus, 0.3-0.7 mm diam. ascomatal wall: black, absent below the hamathecium hamathecium: pseudoparenchymatous, without filaments, inspersed with and dissolving into oil droplets asci: pyriform, c. 60-75 x 15-25 µm, with 8, irregularly arranged ascospores ascospores: hyaline, clavate, 3-septate (starting with a supramedian euseptum), 17-22 x 5-7 µm; walls: not ornamented, without a gelatinous sheath Spot tests: K-, C-, KC-, P-, UV negative Secondary metabolites: none detected. Substrate and ecology: on bark of various woody plants World distribution: possibly endemic in western North America Sonoran distribution: only found in southern California, including the Channel Islands.