 Script lichen Graphis lineola 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
 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
 Details of script lichen (Graphis) 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) on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Tiny green liverwort and Graphis lichen on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Script lichen (Graphis) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 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
 Graphis and other lichens on bark of Huisache(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 Sunken bloodspot lichen (Haematomma persoonii) 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
 Some green liverwort and lichens 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
 Medallion lichen (Dirinaria confusa) 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
 White fringe lichen (Heterodermia albicans) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Map-like texture of lichens on bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Tiny green liverwort on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 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
 White fringe lichen (Heterodermia albicans) on a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Lichen Dirinaria confusa(?) on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 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
 Bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Bark of dry hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Lecanora lichen on hackberry(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 Detail of 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
 Decomposing bark of dry hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 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
 Shoot of Virginia creeper vine on a tree covered by bark lichens in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
 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
 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 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
 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
 Peeling bark of dry hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Detail of hackberry bark in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 12, 2020
 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
 Peeling bark of dead hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 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 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
 Warty texture of bark of hackberry (Celtis laevigata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 17, 2012
 Dirinaria(?) lichen on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 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
 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.
 Medallion lichen (Dirinaria confusa) on hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Saucer lichen Ochrolechia pallescens 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
 Lichens on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Lichens covering a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 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
 Dead tree of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 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
 Smooth shadow-crust lichen (Hyperphyscia syncolla) on a hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
 Slender orange bush lichen (Teloschistes exilis) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2019
 Fruticous lichens on a small tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Texture of dried hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Warty texture of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Trunk of dried hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Shoot of poison ivy on a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Slender orange bush lichen (Teloschistes exilis) on a small elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2019
 Grasshopper on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
 Young leaves of poison ivy on hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Olive patch of smooth shadow-crust lichen (Hyperphyscia syncolla) on a hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
 Slender orange bush lichen (Teloschistes exilis) on a twig of a small tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Lichen Lecanora louisianae(?) on bark in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Dark brown webcap (Cortinarius) mushrooms under elm and hackberry trees on a side of a road in juniper forest, with hackberry and other trees in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 1, 2021
 Slender orange bush lichen (Teloschistes exilis) and striped ramalina lichen (Ramalina montagnei) on a small elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2019
 Shoot of Virginia creeper vine on a tree, with patches of various lichens in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
 Hebeloma mushrooms under oak and hackberry trees in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 25, 2020
 Sooty black mold fungus on leaves of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
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