 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Aspicilia(?) lichen on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Yellow cobblestone lichen Acarospora socialis on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Growth of peppered rock-shield lichen (Xanthoparmelia conspersa) on a sandstone rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Texture of yellow cobblestone lichen Acarospora socialis on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Texture of stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Close-up of stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Silvery leaves of oldplainsman (Hymenopappus artemisiifolius) on a sandstone rock at an overlook point in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Peppered rock-shield lichen Xanthoparmelia conspersa on a sandstone outcrop at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Texture of peppered rock-shield lichen Xanthoparmelia conspersa on a sandstone outcrop at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Peppered rock-shield lichen (Xanthoparmelia conspersa) and rock-dwelling fern Cheilanthes lindheimeri (Myriopteris lindheimeri, lipfern)(?) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) with apothecia on a rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Peppered rock-shield lichen (Xanthoparmelia conspersa) with moss on a rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone rocks on a slope at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Round patch of peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Peppered rock-shield lichen Xanthoparmelia conspersa under oaks and red cedar on sandstone rocks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Texture of peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Peppered rock-shield lichen (Xanthoparmelia conspersa) and sunken rim-lichen (Lecanora oreinoides) on a rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Close-up of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone rocks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Soredia of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) with apothecia on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Rosettes of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Texture of peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Apothecia of peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Sunken rim-lichen (Lecanora oreinoides) and peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone outcrops in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Small rosette of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrops in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa covering sandstone in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa with soredia on sandstone outcrops in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Old patch of peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Soredia of peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Young patch of peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Peppered rock-shield lichen Xanthoparmelia conspersa with apothecia at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) and firedot lichen Caloplaca on a tomb in City Cemetery. Bryan, Texas, January 3, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, December 8, 2018
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tombstone in City Cemetery. Bryan, Texas, March 3, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight on a stone from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
 Apothecia of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) with millipeds on a granite tomb in City Cemetery. Bryan, Texas, December 8, 2018
 Texture of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Pattern of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Firedot lichen (Caloplaca) and peppered rock-shield (Xanthoparmelia conspersa) on a tomb in City Cemetery. Bryan, Texas, January 17, 2023
 Apothecia of peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tomb in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Large apothecia of peppered rock-shield lichen (Xanthoparmelia conspersa) on surface of a granite tomb in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Peppered rock-shield lichen (Xanthoparmelia conspersa) growing around inscription on a granite tomb of C. M. Womack (5/24/1862) in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Rosette lichen (Physcia) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Firedot lichen Squamulea squamosa (Caloplaca squamosa) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 23, 2020
 Rock shield lichen (Xanthoparmelia) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Rock shield lichen (Xanthoparmelia)(?) on a limestone rock in a forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Rock-shield lichen (Xanthoparmelia) in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Rock-shield lichen Xanthoparmelia in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Rock-shield lichen Xanthoparmelia in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Aspicilia(?) lichen on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Some dark green lichen on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Rosette lichen (Physcia) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Cobblestone lichen Acarospora socialis on sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Close-up of Aspicilia(?) lichen on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Rosette lichen (Physcia) with apothecia on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Apothecia of some grey-green lichen on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Some grey crustose lichen on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Apothecia of rosette lichen (Physcia) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Rock-shield lichen (Xanthoparmelia) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Rock-shield lichen Xanthoparmelia in shaded place in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Pattern grey crustose lichen on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Pattern of cobblestone lichen Acarospora socialis(?) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Light grey crustose lichen on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Round patch of Aspicilia(?) lichen on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Black apothecia of rosette lichen (Physcia) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Patch of cobblestone lichen Acarospora socialis on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Rock-shield lichen (Xanthoparmelia) on cracked pink granite of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Rock-shield lichen Xanthoparmelia and a broken limb of Christmas cactus (Tasajillo, Cylindropuntia leptocaulis) in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Firedot lichen Squamulea squamosa (Caloplaca squamosa) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Aspicilia(?) lichen on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Aspicilia(?) lichen on a sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Some grey lichen on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) among Acarospora on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Apothecia of stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Bare-bottomed sunburst lichen (Xanthomendoza weberi, Gallowayella weberi) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Close-up of stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, February 28, 2021
 Rosette lichen (Physcia) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, October 13, 2019
 Aspicilia(?) lichen on a sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, October 13, 2019
 Button lichen (Buellia) on sandstone of Fehr s Overlook Shelter in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Lichen Diploschistes actinostomus on sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
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