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

Thallus: continuous, not immersed in the substrate, effuse or delimited by a thin, blackish hypothallus upper surface: whitish to greenish gray, smooth photobiont: a trentepohlioid alga Perithecia: hemispherical, black, semi-immersed in the thallus, 0.3-0.6 mm diam. perithecial wall: black, with a well differentiated involucrellum, 50-100 µm thick; lower wall: pale or colorless, continuous below the hamathecium hamathecium: branched pseudoparaphyses, anastomosing above the asci; filaments: c. 1 µm wide, not inspersed with oil droplets asci: cylindrical, c. 70-100 x 10 µm, with 8, uniseriately arranged ascospores ascospores: hyaline, ovoid, 1-septate with a slightly submedian euseptum, 13-15 x 5-6 µm, not ornamented, without a gelatinous sheath Pycnidia: two types: 100-200 µm diam. or 40-100 µm diam. conidia: respectively either subglobose to ellipsoid macroconidia, 2.3-4 x 1.8-2.7 µm or globose microconidia, 1-1.5 µm diam. Spot tests: all negative, UV- Secondary metabolites: none detected. Substrate and ecology: on bark of various woody plants World distribution: nearly cosmopolitan Sonoran distribution: SW Arizona and California, including the Channel Islands, but there not rare.

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

Thallus: crustose, endophloeodal, very thin and obscure, partially immersed, upper surface: (if evident) dusky gray or pale lime colored, smooth to rugose Perithecia: superficially semispherical to conical, 0.1-0.3 mm wide, partially immersed, black, wall dimidiate; hymenium: hyaline or pale brown; hypothecium: hyaline asci: narrowly cylindrical, tapering apically, thin-walled, 100 to 150-spored ascospores: ovoid to short ellipsoid, colorless, yellowish in I, 2.5-3 x 2-2.5 µm Spot tests: thallus K-, C-, KC-, P- Secondary metabolites: none detected. Substrate and ecology: on trees (Umbellularia californica) in open habitats World distribution: central, coastal California Sonoran distribution: not yet known. Notes: Originally the species is described from Berkeley, Califonia and has not yet been reported from the Sonoran region. It is included for comparative purposes with Thelopsis and because its substrate (Umbellularia california) is a common tree in southern California. Thus, it should be found.