Stephen Sharnoff - Determiner: IM Brodo Date: 1993-03-05 Locality: United States, Arkansas, City Rocks Bluff Special Interest Area, Ozark NF, Sylamore Rd. just south of Calico Rock; For. Rd. 1105 off AR 5 Substrate: rock. CC0 1.0 (Public-domain) –Source: Consortium of Lichen Herbaria (2023) http//:lichenportal.org/portal/index.php. Accessed on December 09
