Common button lichen (Buellia stillingiana) on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
Common button lichen (Buellia stillingiana) on oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
Common button lichen (Buellia stillingiana) (black) in Lick Creek Park. College Station, Texas, January 18, 2019
Button lichen (Buellia) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Button lichen (Buellia) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Button lichen (Buellia) on limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Patches of button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Sunken button lichen (Buellia spuria) on a marble tomb in Boonville Cemetery. Bryan, Texas, January 27, 2019
Button lichen (Buellia) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
Button lichen (Buellia) on sandstone of Fehr s Overlook Shelter in Bastrop State Park. Bastrop, Texas, March 14, 2019
Close up of button lichen (Buellia) on sandstone of Fehr s Overlook Shelter in Bastrop State Park. Bastrop, Texas, March 14, 2019
Button lichen (Buellia) on limestone 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
Button lichen (Buellia) on a limestone tomb in Old Independence Cemetery near Independence. Texas, February 10, 2019
Button lichen (Buellia) on a rock in a forest in area of sandstone outcrops at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
Button lichen (Buellia) growing on a rock in a forest in area of sandstone outcrops at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
Common button lichen (Buellia stillingiana) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
Sunken button lichen (Buellia spuria) and some folios lichen on sandstone at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
Sunken button lichen (Buellia spuria) and some folios lichen on rocks at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
Button lichen (Buellia) on a granite tombstone in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
Lecanora and Buellia lichens on a small oak in Lick Creek Park. College Station, Texas, June 17, 2019
Close-up of sunken button lichen (Buellia spuria) on rocks at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
Sunken button lichen (Buellia spuria) on a sandstone rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
Button lichen (Buellia) on a polished granite surface of Bible on a tomb in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
Close up of button lichen (Buellia) on a polished granite surface of Bible on a tomb in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
Button mushrooms (Agaricus) in Lick Creek Park. College Station, Texas, June 21, 2019
Script lichen (Graphis) on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
Warty lichen (Pertusaria) in Lick Creek Park. College Station, Texas, January 18, 2019
Saucer lichen Ochrolechia pallescens on oak in Lick Creek Park. College Station, Texas, January 18, 2019
Graphis lichen with orange alga on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
Saucer lichen Ochrolechia pallescens in Lick Creek Park. College Station, Texas, January 18, 2019
Speckled shield lichen (Punctelia) in Lick Creek Park. College Station, Texas, January 18, 2019
Ruffle lichen (Parmotrema) on a tree in Lick Creek Park. College Station, Texas, January 18, 2019
Frosted rim-lichen (Lecanora caesiorubella) on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
Speckled shield lichen (Punctelia) in Lick Creek Park. College Station, Texas, January 18, 2019
Pale brown Lecanora lichen on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
White fringe lichen (Heterodermia albicans)(?) in Lick Creek Park. College Station, Texas, January 18, 2019
Mealy rim-lichen (Lecanora strobilina) on bark of oak in Lick Creek Park. College Station, Texas, January 18, 2019
Wrinkled loop lichen (Hypotrachyna livida) in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata) in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata)(?) in Lick Creek Park. College Station, Texas, January 18, 2019
Small fringe lichen (Heterodermia) on yaupon in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata) in Lick Creek Park. College Station, Texas, January 18, 2019
Close up of medallion lichen (Dirinaria confusa) in Lick Creek Park. College Station, Texas, January 6, 2019
Graphis lichen with orange alga Trentepohlia(?) on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata)(?) in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata) in Lick Creek Park. College Station, Texas, January 9, 2019
Green powdery lichen on yaupon holly in Lick Creek Park. College Station, Texas, January 18, 2019
Medallion lichen (Dirinaria confusa) on yaupon in Lick Creek Park. College Station, Texas, January 6, 2019
Lichen Cryptothecia striata on rough oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
White fringe lichen (Heterodermia albicans)(?) in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata)(?) in Lick Creek Park. College Station, Texas, January 18, 2019
Streaked rosette lichen (Physcia atrostriata) in Lick Creek Park. College Station, Texas, January 18, 2019
Buellia or may be Lecidella lichen on sandstone in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 22, 2012
Common button lichen (Buellia stillingiana) on hackberry(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
Common Button Lichen (Buellia stillingiana) on bark of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 13, 2022
Buellia or may be Lecidella lichen on sandstone outcrops in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
Saucer lichen Ochrolechia pallescens and Punctelia on oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
Close up of white fringe lichen (Heterodermia albicans) in Lick Creek Park. College Station, Texas, January 18, 2019
White fringe lichen (Heterodermia albicans) on yaupon in Lick Creek Park. College Station, Texas, January 6, 2019
White fringe lichen (Heterodermia albicans) on yaupon in Lick Creek Park. College Station, Texas, January 18, 2019
Medallion lichen (Dirinaria confusa) on yaupon holly in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata)(?) on a tree in Lick Creek Park. College Station, Texas, January 18, 2019
Bark rash lichen (Pyrenula cruenta) on hackberry in Lick Creek Park. College Station, Texas, January 9, 2019
White fringe lichen (Heterodermia albicans)(?) on yaupon in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata) on a tree in Lick Creek Park. College Station, Texas, January 18, 2019
Wrinkled loop lichen (Hypotrachyna livida) on yaupon in Lick Creek Park. College Station, Texas, January 6, 2019
Sunken bloodspot lichen (Haematomma persoonii) and Lecanora on oak in Lick Creek Park. College Station, Texas, January 18, 2019
Palm ruffle lichen (Parmotrema tinctorum) on yaupon in Lick Creek Park. College Station, Texas, January 6, 2019
Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) near Deer Run Trail in Lick Creek Park. College Station, Texas, June 8, 2008
Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) near Deer Run Trail in Lick Creek Park. College Station, Texas, July 4, 2013
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
Black dotted lichen Buellia or may be Lecidella on sandstone outcrops in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
Black dots of a lichen Buellia or may be Lecidella on sandstone outcrops in an oak and red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
Sunken bloodspot lichen (Haematomma persoonii) on river birch in Lick Creek Park. College Station, Texas, January 18, 2019
Wrinkled loop lichen (Hypotrachyna livida) on yaupon holly in Lick Creek Park. College Station, Texas, January 18, 2019
Script lichen (Graphis) on a thin trunk of Yaupon holly in Lick Creek Park. College Station, Texas, January 1, 2019
Powdery medallion lichen (Dirinaria applanata)(?) on yaupon holly in Lick Creek Park. College Station, Texas, January 18, 2019
Powdery medallion lichen (Dirinaria applanata) on yaupon holly in Lick Creek Park. College Station, Texas, January 18, 2019
Bushy beard lichen (Usnea strigosa) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
Flowering fringe lichen (Heterodermia echinata) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
Spiny button-like flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek park, on Deer Run Trail. College Station, June 15, 2008
Underside of perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
Close up of perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
Crimson warts of bark rash lichen (Pyrenula cruenta) on hackberry in Lick Creek Park. College Station, Texas, January 9, 2019
Powdery medallion lichen (Dirinaria applanata) on a small hackberry tree in Lick Creek Park. College Station, Texas, January 9, 2019
Close up of powdery medallion lichen (Dirinaria applanata)(?) on yaupon holly in Lick Creek Park. College Station, Texas, January 18, 2019
Palm ruffle lichen (Parmotrema tinctorum) on a thin trunk of Yaupon holly in Lick Creek Park. College Station, Texas, January 1, 2019
Sunken button lichen (Buellia spuria, ashy grey with black dots) and Aspicilia (grey) crustose lichens in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
Spiny flowerhead of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
Buellia(?) lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
Flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
Some black Buellia(?) lichen on granite cliffs in Monrepos Park in Vyborg. Russia, May 24, 2019
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