 Sunken bloodspot lichen (Haematomma persoonii) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on an oak in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 2019
 Texture of sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 2019
 Red apothecia of sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 2019
 Medallion lichen (Dirinaria confusa) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Saucer lichen Ochrolechia pallescens on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Script lichen Graphis lineola on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Close up of medallion lichen (Dirinaria confusa) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Script lichen Graphis lineola and other crustose lichens on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Sunken bloodspot lichen (Haematomma persoonii) on a petrified wood tomstone in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Script lichen (Graphis) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Medallion lichen (Dirinaria confusa) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Details of script lichen (Graphis) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Texture of script lichen (Graphis) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Saucer lichen Ochrolechia pallescens on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Tiny green liverwort and Graphis lichen on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Saucer lichen Ochrolechia pallescens with apothecia on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Apothecia of saucer lichen Ochrolechia pallescens on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Apothecia of medallion lichen (Dirinaria confusa) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Texture of white fringe lichen (Heterodermia albicans) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Mixed crustose lichens on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Script lichen Graphis lineola(?) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 White fringe lichen (Heterodermia albicans) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Sunken bloodspot lichen (Haematomma persoonii) on a deciduous tree in Old Independence Cemetery near Independence. Texas, February 10, 2019
 Tiny green liverwort on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Some green liverwort and lichens on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 White fringe lichen (Heterodermia albicans) on a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Sunken bloodspot lichen (Haematomma persoonii) in Lick Creek Park. College Station, Texas, June 17, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on an oak in Lick Creek Park. College Station, Texas, February 3, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020
 Script lichen (Graphis) on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Lichen Dirinaria confusa(?) on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Red patch of sunken bloodspot lichen (Haematomma persoonii) on an oak in Lick Creek Park. College Station, Texas, February 3, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on an oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on an oak branch in Lick Creek Park. College Station, Texas, February 3, 2019
 Sunken bloodspot lichen (Haematomma persoonii) and Lecanora on oak in Lick Creek Park. College Station, Texas, January 18, 2019
 Texture of sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020
 Pattern od sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020
 Close-up of sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020
 Sunken bloodspot lichen (Haematomma persoonii) on river birch in Lick Creek Park. College Station, Texas, January 18, 2019
 Common Button Lichen (Buellia stillingiana) on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Warts on the bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Sunken bloodspot lichen (Haematomma persoonii) with other crustose lichens on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020
 Sunken bloodspot lichen (Haematomma persoonii) with moss and other crustose lichens on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020
 Bark of dry hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Sunken bloodspot lichen (Haematomma persoonii) on a fallen oak twig in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Lecanora lichen on hackberry(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 Corky bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 30, 2010
 Warts on bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Detail of bark of dry hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Decomposing bark of dry hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Bark of dead hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Detail of bark of dead hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Corky ridges of bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 30, 2010
 Common button lichen (Buellia stillingiana) on hackberry(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 Old holes bored by sapsuckers in warty bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 30, 2010
 Sunken bloodspot lichen (Haematomma persoonii) on a fallen oak on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Black crust of dried slime mold (Ascomycota) on bark of Maclura(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Trunk of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 30, 2010
 Common button lichen (Buellia stillingiana) (black) together with Lecanora on hackberry(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 White fringe lichen (Heterodermia albicans) (or may be H. japonica, H. casarettiana) on hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Scar of a trunk of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 30, 2010
 A twig of hackberry tree with fruits in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Dot lichen (Bacidia) on a dry(?) trunk of a bush-like tree of huisache (Acacia minuata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Dust lichen (Lepraria) on oak bark in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2019
 Texture of fringe lichen (Heterodermia) on a dry(?) trunk of a bush-like tree of huisache (Acacia minuata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Medallion lichen (Dirinaria confusa) on one of trunks of a bush-like tree of huisache (Acacia minuata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Medallion lichen (Dirinaria confusa) on a dry(?) trunk of a bush-like tree of huisache (Acacia minuata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Close up of medallion lichen (Dirinaria confusa) on a dry(?) trunk of a bush-like tree of huisache (Acacia minuata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Detail of hackberry bark in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 12, 2020
 Peeling bark of dry hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Peeling bark of dead hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
 Tiny liverwort on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Warty bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Corky ridges of bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Warts on bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 3, 2010.
 Texture of bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 17, 2012
 Warty texture of bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 17, 2012
 Map-like texture of lichens on bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Pertusaria and sunken bloodspot (Haematomma persoonii) lichens on a dry oak in Lick Creek Park. College Station, Texas, January 23, 2020
 Dirinaria(?) lichen on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Close-up of texture of lichens on bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Fringe lichen (Heterodermia) on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Mushrooms Mycena corticola on a tree bark in area of Old Washington Town Site in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 6, 2021
 Script lichen (Graphis) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Ruffle lichen (Parmotrema) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Saucer lichen Ochrolechia on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Warty texture with corky ridges of bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 3, 2010.
 Saucer lichen Ochrolechia pallescens on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Medallion lichen (Dirinaria confusa) on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Collema lichen on a branch of a big Maclura tree in a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 2, 2018
 Close up of medallion lichen (Dirinaria confusa) on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Common button lichen (Buellia stillingiana) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Leaves of hackberry tree with Asian woolly hackberry aphids Shivaphis celti (Homoptera: Aphididae) and sooty black mold (fungal growth) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Drying hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Rotten hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
|