 Old tombstones in City Cemetery in fog. Bryan, Texas, January 6, 2013
 The marble tombstone with a cavity on the northern side of the Chapel of the Sepulchre in the Church of the Sepulchre in Old City. Jerusalem, the Middle East, June 28, 2001
 Firedot lichen Caloplaca subsoluta (Caloplaca irrubescens) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Old marble tombstone in Odd Fellow Cemetery. Anderson, Texas, December 31, 2009
 A tombstone of Samuel Sparhawk (1664 - 11/2/1713) in Old Burying Ground of Harvard University. Boston, Massachusetts, April 19, 2003
 Detail of a tombstone of Old Burying Ground of Harvard University in Cambridge. Boston, Massachusetts, April 19, 2003
 Lane paved by old tombstones in Volkovo Cemetery. Saint Petersburg, Russia, September 4, 2007
 Tombstone of Asa Chaddick (9/2/1815 - 6/12/1898) in Old Oakland Cemetery at Road 219. Roans Prairie, Texas, January 26, 2008
 Old tombstones in Volkovo Cemetery. Saint Petersburg, Russia, September 4, 2007
 Old tombstones of Oakwood Cemetery in fog. Huntsville, Texas, December 29, 2011
 Old tombstones on First Lane in Smolenskoe Cemetery. Saint Petersburg, Russia, March 12, 2017
 Rock shield lichen (Xanthoparmelia) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Close up of rock shield lichen (Xanthoparmelia) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Rosy saucer lichen (Ochrolechia trochophora) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Rosy saucer lichen (Ochrolechia trochophora) on upper edge of an old tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Spotted rosette lichen (Physcia pumilior(?)) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Brown apothecia of spotted rosette lichen (Physcia pumilior(?)) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Greenish buttoned rosette lichen (Pyxine) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Greenish buttoned rosette lichen (Pyxine) with soredia on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Buttoned rosette lichen (Pyxine) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Buttoned rosette lichen (Pyxine) with soredia on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Button lichen (Buellia) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Rosy saucer lichen (Ochrolechia trochophora) with apothecia on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Spotted rosette lichen (Physcia pumilior(?)) with brown apothecia on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Pepper-spore lichen (Rinodina) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Rosette lichen (Physcia) on a tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Perforated ruffle lichen (Parmotrema perforatum) on a granite tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a granite tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Old tombstones in Washington Cemetery. Washington, Texas, December 8, 2019
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