 Close up of elm catkins collected by ants under a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Accumulation of elm catkins near ant burrows in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Young leaves and catkins on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Catkins on a large oak in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Large oak with catkins in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Sand mounds of leafcutter ants under a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Oak catkins in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Catkins on oak in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Fire ants mound in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Leaf cutter ants in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Catkins and young leaves of oak near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Accumulation of ants on a gravel path in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 8, 2014
 Leaf cutter ants on sand near their nest in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Sand burrow of harvester ants on a road in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 Leaf cutter ants carrying fragments of grass in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Burrow of leaf cutter ants with fragments of grass around in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Nest of leaf cutter ants carrying fragments of grass in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Entrance hole of a large mound of red harvester ants (Pogonomyrmex barbatus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Entrance hole of a large sand mound of red harvester ants (Pogonomyrmex barbatus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
 Leaf cutter ants on sandy soil carrying fragments of grass in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Tree foliage in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
 Young leaves on a pecan tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 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
 Fruticous lichens on a small tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Fringe lichen (Heterodermia) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Fringe lichen Heterodermia on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2019
 A twig of hackberry tree with fruits in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Spores of Lactocollybia mushrooms from the base of an osage orange tree, collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2022
 Texture of tree bark in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
 Medallion lichen Dirinaria confusa on an old tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2019
 Medallion lichen Dirinaria confusa on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2019
 Blooming redbud tree (Cercis canadensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Fringe lichen (Heterodermia) on a small tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Saucer lichen Ochrolechia pallescens on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Dry tree foliage on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
 Phaeophyscia lichen on a large huisache (acacia) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2019
 Lichen Lecanora louisianae(?) on acacia (huisache) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Mushrooms Mycena corticola on a small cedar elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
 Tiny green liverwort on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Sunken bloodspot lichen (Haematomma persoonii) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Some green liverwort and lichens on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Common button lichen (Buellia stillingiana) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Script lichen (Graphis) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 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
 Flowers and young leaves of redbud tree (Cercis canadensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Close up of fringe lichen (Heterodermia) on small cedar elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Heterodermia albicans or may be H. casarettiana lichen on acacia (huisache) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Fringe lichen (Heterodermia albicans(?)) on acacia (huisache) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Slender orange bush lichen (Teloschistes exilis) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2019
 Close up of fringe lichen (Heterodermia) on acacia (huisache) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 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
 Texture of script lichen (Graphis) on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Tree fungus Melogramma gyrosum on a recently dried oak branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
 Close up of Phaeophyscia lichen on a large huisache (acacia) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2019
 White fringe lichen (Heterodermia albicans) on a 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
 Some black Hypoxylon-like fungus on a fallen tree branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2021
 Gulf fritillary (Agraulis vanillae) butterfly on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
 Highway of Texas leaf cutting ants (Atta texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Nest of Texas leaf cutting ants (Atta texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Asci and spores of black Hysteroid pyrenomycetous fungus Hysterium angustatum(?) from a dry maclura tree at low magnification, collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
 Asci and paraphyses of black Hysteroid pyrenomycetous fungus Hysterium angustatum(?) from a dry maclura tree at low magnification, collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
 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
 Burrow of a nest of Texas leaf cutting ants (Atta texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Tiny green liverwort and Graphis lichen on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Slender orange bush lichen (Teloschistes exilis) on a small elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 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
 Saucer lichen Ochrolechia pallescens with apothecia on bark of hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Octopus-like palmetto lichen (Ramalina celastri) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Dissected black Hypoxylon-like fungus on a fallen tree branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2021
 Flowers of Morning glory (tievine, Ipomoea cordatotriloba) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Blooming Morning glory (tievine, Ipomoea cordatotriloba) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Flower of Morning glory (tievine, Ipomoea cordatotriloba) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 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
 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
 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
 Texas leaf cutting ants (Atta texana) with leaves and berries of Yaupon holly in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Texas leaf cutting ants (Atta texana) carrying leaves of Yaupon holly in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Close-up of Texas leaf cutting ants (Atta texana) with leaves of Yaupon holly in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Close up of flower of Morning glory (tievine, Ipomoea cordatotriloba) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Powdered shadow lichen (Phaeophyscia hirsuta) and splitgill mushrooms on acacia (huisache) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Prostrate polypore mushroom of Fomitiporia punctata group on a fallen tree branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2021
 Basidia and spores of tiny yellow oysterling mushrooms Crepidotus praecipuus(?) from crevices of a dry standing huisache (Acacia) tree, collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 3, 2023
 Hyphae (in Congo Red) of tiny yellow oysterling mushrooms Crepidotus praecipuus(?) from crevices of a dry standing huisache (Acacia) tree, collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 3, 2023
 Tissues (at low magnification) of tiny yellow oysterling mushrooms Crepidotus praecipuus(?) from crevices of a dry standing huisache (Acacia) tree, collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 3, 2023
 Close-up of resupinate polypore mushroom of Fomitiporia punctata group on a fallen tree branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2021
 Striped ramalina lichen (Ramalina montagnei) on a small elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2019
 Sunburst lichen Xanthomendoza weberi (Gallowayella weberi) on a twig of a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Old pecan tree near Brazos River in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 25, 2020
 Pigeon-berry (Rivina humilis, rouge-plant, baby peppers) collected near a ferry site in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 5, 2018
 Habitat of creeping lovegrass (Eragrostis reptans, Neeragrostis reptans) in a dried pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Lichens on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Shoots of elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Large oak tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 3, 2021
 Tree bark in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
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