 Bible on a marble tombstone in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Marble tombstone with golden lichen in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Pyxine lichen on a marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) on back of a grey marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Pattern of rosette lichen (Physcia) on back of a grey marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on a marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Sign of Stewart Iron Works Cincinnati, Ohio on a tomb fence in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Texture of a marble tombstone at sunrise in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Rosette lichen (Physcia) on a granite tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Pattern of rosette lichen (Physcia) on a granite tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) with apothecia on marble in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Small rosettes of Pyxine lichen on marble in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Close up of powdered shadow lichen (Phaeophyscia hirsuta) on a tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Texture of powdered shadow lichen (Phaeophyscia hirsuta) on a tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Sunken button lichen (Buellia spuria) on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) with apothecia on marble in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) with apothecia on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Pattern of powdered shadow lichen (Phaeophyscia hirsuta) on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) with thorny apothecia on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Tombstone texture in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Bible on a tombstone in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Bark of an oak tree in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Old rotten tree in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Oak tree bark in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Base of a tree in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Marble ivy with tendrils of a tomb in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Lichens on a marble tomb in Boonville Cemetery. Bryan, Texas, December 8, 2018
 Calla flowers on a marble tombstone in City Cemetery. Bryan, Texas, December 30, 2012
 Handshake symbol with orange and green lichens on a marble tombstone in City Cemetery. Bryan, Texas, December 8, 2018
 Marble tombstone of Duntain (1853-1921) both in natural light and under 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Marble tombstone of Hill(?) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Boonville Cemetery. Bryan, Texas, November 16, 2011
 Handshake symbol on a marble tombstone when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Marble tombstone of Mary Koppe when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Tombs of Boonville Cemetery. Bryan, Texas, November 16, 2011
 Sidewalk firedot lichen (Xanthocarpia feracissima, Caloplaca feracissima) on a marble rose in Boonville Cemetery. Bryan, Texas, December 8, 2018
 Bare-bottomed sunburst lichen (Xanthomendoza weberi, Gallowayella weberi) on a marble tree in Boonville Cemetery. Bryan, Texas, December 8, 2018
 Tomb of Fordon Nfeoham(?) who died in Boonville TX in 1875 in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Detail of a tomb of a person who died in Boonville TX in 1875 in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Pyxine lichen on sandstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Handshake on a tombstone in City Cemetery. Bryan, Texas, January 6, 2013
 Rosette lichen (Physcia) on an iron fence in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) on a fallen oak twig in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Marble tombstone in Washington Cemetery. Washington, Texas, January 26, 2013
 Green-blue rosette lichen (Physcia) on sandstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Small rosette of Pyxine lichen on an iron fence in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) with brown apothecia on a fallen oak branch in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) on an old dry cracked stump of a red cedar tree in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Marble tombs in City Cemetery. Bryan, Texas, January 27, 2020
 Rosette lichen (Physcia) with dense brown apothecia on a fallen oak branch in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Pepper-spore lichen (Rinodina) (pale blue-grey) between other lichens on an old tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Marble angel with stretched arms in City Cemetery. Bryan, Texas, January 17, 2023
 Mossy marble angel on a tomb in City Cemetery. Bryan, Texas, January 17, 2023
 Green lichens on a marble angel in City Cemetery. Bryan, Texas, January 17, 2023
 Old marble tombstone in Odd Fellow Cemetery. Anderson, Texas, December 31, 2009
 Black-faced marble angel on a tomb of Astin in City Cemetery. Bryan, Texas, January 3, 2019
 Firedot lichen Squamulea squamosa (Caloplaca squamosa) on a horizontal surface of a tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Bare-bottomed sunburst lichen (Xanthomendoza weberi, Gallowayella weberi) on old iron(?) in Boonville Cemetery. Bryan, Texas, January 27, 2019
 A marble tombstone in Saint Louis Cemetery No. 2. New Orleans, Louisiana, February 11, 2006
 Firedot lichen Squamulea squamosa (Caloplaca squamosa) covering a horizontal surface of a tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Details of firedot lichen Squamulea squamosa (Caloplaca squamosa) on a horizontal surface of a tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Clasped hands sign in City Cemetery. Bryan, Texas, December 30, 2012
 Granite tombstone with a carved sign of an idex finger pointed upward when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Odd Fellow Cemetery. Anderson, Texas, November 9, 2024
 A mysterious sign on a marble grave of L. Godfrey (died May 22, 1847) on a small cemetery at Kerber Road, 6 miles west from Lafayette, Indiana, September 25, 1999.
 Boonville Cemetery in fog. Bryan, Texas, November 29, 2012
 Marble tombstone shaped as a tree trunk in Bryant Station Cemetery near Buckholts. Texas, December 1, 2012
 Marble tombstone in Necropolis of Alexander Nevsky Lavra (Lazarevskoe Cemetery). Saint Petersburg, Russia, May 29, 2014
 Tombs of Boonville Cemetery in fog. Bryan, Texas, November 29, 2012
 Tomb in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Oaks of Boonville Cemetery in fog. Bryan, Texas, November 29, 2012
 Tombs in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Tombstones in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Trees in Boonville Cemetery in fog. Bryan, Texas, November 13, 2008
 Oaks in Boonville Cemetery in fog. Bryan, Texas, November 13, 2008
 A marble tombstone in Necropolis of Alexander Nevsky Lavra (Lazarevskoe Cemetery). Saint Petersburg, Russia, August 9, 2004
 Bark of an oak tree in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Split oak bark in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Tombs and trees of Boonville Cemetery in fog. Bryan, Texas, November 13, 2008
 Tombs of M. C. and L. E. Steed in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Cedar trunk in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Dead oak tree No. 6 in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Headstone texture in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Rotten tree in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Base of a tree in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Powdered shadow lichen (Phaeophyscia hirsuta) on a marble tombstone in a city cemetery. College Station, Texas, February 6, 2019
 Cedar tree trunk in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Skull shaped oak gnarl in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Bark of cedar tree in Boonville Cemetery. Bryan, Texas, December 17, 2010
 Iron fence of a tomb in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Dead cedar tree in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Cedar trunk joints in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Base of a cedar trunk in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Gnarl on cedar trunk in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Heraldic sign on a tomb of Alfred Clarence Wren (1851 - 1883) in City Cemetery. Bryan, Texas, December 30, 2012
 Details of an iron fence of a tomb in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Healed damage to a cedar tree in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Tombs of Thomas and Martha Johnson in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Detail of a marble tombstone in Calvert Cemetery. Calvert, Texas, December 13, 2009
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