 Rosette lichen (Physcia) on a tomb in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Rosette lichen (Physcia) with soredia on a tomb in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Rosette lichen (Physcia) and sunburst lichen Xanthomendoza weberi (Gallowayella weberi) on a tomb in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Rosette lichen Physcia dimidiata(?) on a marble angel in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen Physcia dimidiata(?) on a leg of a marble angel in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen (Physcia) in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Sunburst lichen Xanthomendoza weberi (Gallowayella weberi) and some powdery red lichen on a marble tomb in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Rosette lichen (Physcia) on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Close up of rosette lichen (Physcia) on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen (Physcia) with apothecia on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Some rusty red powdery lichen on marble surface in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) on marble in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Rock-shield lichen (Xanthoparmelia) on a tomb in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
 Physcia(?) lichen on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen (Physcia) with apothecia on marble 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
 Rosette lichen (Physcia) on a tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Pattern of rosette lichen (Physcia) on back of a grey marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Frosted rosette lichen (Physcia biziana) on tomb in cemetery at Mission de Cristo Jesus Church at road 259 in Port Sullivan, west from Hearne. Texas, January 8, 2019
 Rosette lichen (Physcia) on a 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
 Spotted rosette lichen (Physcia pumilior(?)) with brown apothecia 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
 Rosette lichen Physcia erumpens(?) on a tree on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Streaked rosette lichen (Physcia atrostriata) on yaupon(?) on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Rosette lichen Physcia erumpens(?) on tree bark on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Rosette lichen (Physcia) on an iron fence in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) on a granite tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Rosette lichen (Physcia) on a fallen oak twig 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
 Green-blue rosette lichen (Physcia) on sandstone 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
 Rosette lichen (Physcia) with dense brown apothecia on a fallen oak branch 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) 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 apothecia on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) with thorny apothecia on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
 Sunburst lichen Xanthomendoza weberi (Gallowayella weberi) together with Physcia on a tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen (Physcia) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Rosette lichen (Physcia) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Some pale green crustose lichen on a marble tomb in Washington Cemetery. Washington, Texas, January 12, 2019
 Rosette lichen (Physcia) on concrete remains near the columns in Old Bailor park. Independence, Texas, February 27, 2019
 Rosette lichen (Physcia) on a tree on Kiwanis Nature Trail, College Station, Texas, February 26, 2019
 Rosette lichen (Physcia) on a tree in Lick Creek Park. College Station, Texas, February 20, 2019
 Frosted rosette lichen (Physcia biziana) on a brick surface in cemetery at Mission de Cristo Jesus Church at road 259 in Port Sullivan, west from Hearne. Texas, January 8, 2019
 Frosted rosette lichen (Physcia biziana) on a brick shrine in cemetery at Mission de Cristo Jesus Church at road 259 in Port Sullivan, west from Hearne. Texas, January 8, 2019
 Streaked rosette lichen (Physcia atrostriata) on an oak on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Firedot lichen Squamulea squamosa (Caloplaca squamosa) on a marble tomb in City Cemetery. Bryan, Texas, March 3, 2019
 Rosette lichen (Physcia) on tree bark on Kiwanis Nature Trail, College Station, Texas, February 26, 2019
 Some rosette lichen (Physcia) on tree bark on Kiwanis Nature Trail, College Station, Texas, February 26, 2019
 Patch of rosette lichen (Physcia) on a tree on Kiwanis Nature Trail, College Station, Texas, February 26, 2019
 Frosted rosette lichen (Physcia biziana) on oak bark in open area in cemetery at Mission de Cristo Jesus Church at road 259 in Port Sullivan, west from Hearne. Texas, January 8, 2019
 Frosted rosette lichen (Physcia biziana) with pruina on an oak in open area in cemetery at Mission de Cristo Jesus Church at road 259 in Port Sullivan, west from Hearne. Texas, January 8, 2019
 Streaked rosette lichen (Physcia atrostriata) on oak bark on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Heterodermia and streaked rosette lichen (Physcia atrostriata) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Heterodermia and streaked rosette lichen (Physcia atrostriata) on oak bark on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Streaked rosette lichen (Physcia atrostriata) with soredia in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Streaked rosette lichen (Physcia atrostriata) on atree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Streaked rosette lichen (Physcia atrostriata) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Streaked rosette lichen (Physcia atrostriata) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Streaked rosette lichen (Physcia atrostriata) with liverwort Leucolejeunea conchifolia(?) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Streaked rosette lichen (Physcia atrostriata) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019
 Spotted rosette lichen Physcia pumilior on an iron sculpture in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 12, 2019
 Spotted rosette lichen Physcia pumilior on a tree bark in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 12, 2019
 Spotted rosette lichen Physcia pumilior with apothecia on a tree bark in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 12, 2019
 Spotted rosette lichen (Physcia pumilior) on a huisache(?) tree in abandoned TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 22, 2019
 Rosette lichen (Physcia) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Rosette lichen (Physcia) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) on a marble tombstone in a city cemetery. College Station, Texas, February 6, 2019
 Spotted rosette lichen (Physcia pumilior) with brown apothecia on a huisache(?) tree in abandoned TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 22, 2019
 Streaked rosette lichen (Physcia atrostriata) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Streaked rosette lichen (Physcia atrostriata) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Green patch of rosette lichen (Physcia) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Close up of streaked rosette lichen (Physcia atrostriata) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Streaked rosette lichen (Physcia atrostriata) in Lick Creek Park. College Station, Texas, January 18, 2019
 Smooth shadow-crust lichen (Hyperphyscia syncolla) and rosette lichen (Physcia) on lower branches of old acacia (huisache) between Signature Park 11 apartments and Oil Well near Park Hudson Trail. Bryan, Texas, January 27, 2019
 Black-faced marble angel on a tomb of Astin in City Cemetery. Bryan, Texas, January 3, 2019
 A marble harpist at a tomb of L. Denapolis in Metairie Cemetery. New Orleans, Louisiana, February 12, 2006
 Hoary rosette lichen (Physcia aipolia) on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Hoary rosette lichen Physcia aipolia on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Hoary rosette lichen Physcia aipolia on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Rosette lichen (Physcia) and bare-bottomed sunburst lichen (Xanthomendoza weberi, Gallowayella weberi) on sandstone of Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, March 14, 2019
 Close up of hoary rosette lichen Physcia aipolia on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Details of hoary rosette lichen (Physcia aipolia) on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Hoary rosette lichen Physcia aipolia with apothecia on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Foliose lichen Hoary rosette (Physcia aipolia) on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Apothecia of hoary rosette lichen Physcia aipolia on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Button lichen (Buellia) on a limestone tomb in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Rosette lichen Physcia(?) on a tree on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Hoary rosette lichen (Physcia aipolia) together with red dots of Nectriaceae fungus on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
 Buttoned rosette lichen (Pyxine) on limestone 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 other lichens in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Rosette lichen Physcia(?) on tree bark on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Greenish buttoned rosette lichen (Pyxine) on limestone 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
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