 Firedot lichen Caloplaca subsoluta (Caloplaca irrubescens) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Firedot lichen Caloplaca subsoluta (Caloplaca irrubescens) with black prothallus on a granite tomb in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Button lichen (Buellia) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Some whitish lichen on a limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Button lichen (Buellia) on limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Some dark-green crustose lichen on a limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Bordered scale lichen (Psora pseudorussellii) on a limestone conglomerate rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Black lichen Verrucaria on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Leather lichen (Dermatocarpon) on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Leather lichen (Dermatocarpon) on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Grey crustose lichen on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Chiseled sunken disk lichen (Circinaria contorta, Aspicilia contorta) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Leather lichen (Dermatocarpon) on limestone in a forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Tar-jelly lichen (Collema) on limestone conglomerate in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dark-green crustose lichen on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Button lichen (Buellia) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Patches of button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dust lichen (Lepraria) on limestone in shade of cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Green Cladonia lichen on sandstone or limestone in a forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 White patch of Aspicilia lichen on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ruffle lichen (Parmotrema) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Close up of black and green lichen Verrucaria on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ruffle lichen (Parmotrema) in shade on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Close up of green Cladonia lichen on sandstone or limestone in a forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Rock shield lichen (Xanthoparmelia) on limestone in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ruffle lichen (Parmotrema) on a mossy limestone rock in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Limestone rocks near the falls in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 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
 Cracked limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Bordered scale lichen (Psora pseudorussellii) on a conglomerate rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Various crustose lichens on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Black limestone rocks in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Bordered scale lichen (Psora pseudorussellii) in wet condition on a conglomerate rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Partially dry bordered scale lichen (Psora pseudorussellii) on a conglomerate rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Plants in shade of limestone cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Crustose lichens of different colors on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Lichens and sorrel on shady limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Buellia and other lichens on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Brown and orange crustose lichens on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Smooth limestone rocks near the water stream in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Leather lichen (Dermatocarpon) in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Rock-shield lichen Xanthoparmelia cumberlandia and firedot lichen Caloplaca on a tomb in City Cemetery. Bryan, Texas, January 3, 2019
 Stonewall rim-lichen (Lecanora muralis) in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dirinaria lichen on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Ruffle lichen (Parmotrema) on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dust lichen (Lepraria) in shade of cliffs in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Dust lichen (Lepraria) on shaded rocks in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Firedot lichen Caloplaca squamosa in City Cemetery. Bryan, Texas, March 3, 2019
 Firedot lichen Caloplaca squamosa on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Dry riverbed in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Pedernales River in Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 29, 2008
 Shores of Pedernales River below bluffs in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Pedernales river in beach area of Pedernales Falls State Park. Johnson City, Texas, November 6, 2010
 Pedernales River in north area of Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Waterfalls from the overlook in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Side waterfall in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Small waterfall in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Water stream in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Water and rocks in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Water cascades in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Cypress roots enveloping a river boulder in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Cypress trees lining Pedernales River below bluffs in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Firedot lichen (Caloplaca) on stones for road erosion control in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Firedot lichen Caloplaca crenulatella on erosion control stones in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Small water stream in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Entangled cypress roots growing over river boulders in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Firedot lichen Caloplaca squamosa on sandstone at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Firedot lichen Caloplaca squamosa on a horizontal surface of a tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Firedot lichen Caloplaca squamosa 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
 Narrowed stream below the falls in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Firedot lichen Caloplaca squamosa near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Details of firedot lichen Caloplaca squamosa on a horizontal surface of a tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Firedot lichen Caloplaca squamosa covering a horizontal surface of a tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Firedot lichen Caloplaca squamosa and other lichens 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
 Crust of firedot lichen Caloplaca squamosa 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
 Close up of firedot lichen Caloplaca squamosa near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Firedot lichen Caloplaca squamosa on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, October 13, 2019
 Firedot lichen Caloplaca squamosa on sandstone near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Apothecia of firedot lichen Caloplaca squamosa on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Firedot lichen Caloplaca squamosa with apothecia on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Firedot lichen Caloplaca on a tomb in City Cemetery. Bryan, Texas, December 8, 2018
 Bark sulphur-firedot lichen (Caloplaca flavorubescens) on bark of hackberry tree in Lick Creek Park. College Station, Texas, January 1, 2019
 Pattern of bark sulphur-firedot lichen (Caloplaca flavorubescens) on bark of hackberry tree in Lick Creek Park. College Station, Texas, January 1, 2019
 Texture of bark sulphur-firedot lichen (Caloplaca flavorubescens) on bark of hackberry tree in Lick Creek Park. College Station, Texas, January 1, 2019
 Soaptree yucca (Yucca elata) in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Orange apothecia of bark sulphur-firedot lichen (Caloplaca flavorubescens) on bark of hackberry tree in Lick Creek Park. College Station, Texas, January 1, 2019
 River below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
 River downstream from Cypress Pool in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 River flats in north area of Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Small waterfall in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Water cascade in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Base of a cypress in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Dry cypress stump in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Tip of a cypress knee in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Giant boulder in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Cypresses on a river island in north area of Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
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