Opuscula Philolichenum 7: 24 (2009).
Chemistry: Gyrophoric acid (thallus), K-, KC+ weak pink (in squash mount), C+ pale pink (in squash mount), P-, UV- (Knudsen & Lendemer 2009: 24).
U.S.A. CALIFORNIA. LOS ANGELES CO.: Claremont, Bernard Biological Field Station, back area called "The Neck", 34°06'58"N, 117°42'15"W, 418 m, common on dead wood of Artemisia californica on ground from senescent shrub that had disintegrated, 26.iv.2009, K. Knudsen 10932 & N. Hamlett = Lich. East. N. Amer. Exs. VIII: 152 (UCR, holotype; NY, isotype, 20 additional isotypes to be distributed).
Type locality: USA, California, Los Angeles County, Claremont, Bernard Biological Field Station, back area called "The Neck", common on dead wood of Artemisia californica on ground from senescent shrub that had disintegrated, 418 m, 26. April 2009, K. Knudsen 10932 & N. Hamlett = Lich. East. N. Amer. Exs. VIII: 152 (UCR - holotype; NY - isotype, 20 additional isotypes to be distributed).
Barcode: Data lacking.
Coordinates: 34°06'58"N, 117°42'15"W.