Sunken rim-lichen (Lecanora oreinoides) or may be Aspicilia 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
Cladonia lichen with red spore reproducing organs in a forest in Posiolok, near Vyritsa, 50 miles south from Saint Petersburg. Russia, July 9, 2016
Cracked lichen Acarospora novomexicana (yellow) and firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) (red) on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Red firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Large granite stone covered by cracked lichen Acarospora novomexicana (yellow) and firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) (red) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Cladonia lichen with red spore reproducing organs in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016
Cracked lichen Acarospora novomexicana (yellow) and firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) (red) on pink granite of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Red apothecia of sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 2019
Ruffle lichen (Parmotrema) on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Dust lichen (Lepraria) on shaded rocks in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Ruffle lichen (Parmotrema) on a mossy limestone rock in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Rock shield lichen (Xanthoparmelia) on limestone in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
Dirinaria lichen on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
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
Peppered rock-shield lichen Xanthoparmelia conspersa 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 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
Peppered rock-shield lichen Xanthoparmelia conspersa with soredia 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
Peppered rock-shield lichen Xanthoparmelia conspersa 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
Peppered rock-shield lichen Xanthoparmelia conspersa covering 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
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
Yellow cobblestone lichen Acarospora socialis 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
Firedot lichen Squamulea squamosa (Caloplaca squamosa) 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
Firedot lichen Squamulea squamosa (Caloplaca squamosa) and other lichens 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
White crust of sunken rim-lichen (Lecanora oreinoides) 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
Pattern of white crust of sunken rim-lichen (Lecanora oreinoides) 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 rim-lichen (Lecanora oreinoides) and peppered rock-shield lichen (Xanthoparmelia conspersa) 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
Dust lichen (Lepraria) in shady spot 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
Dust lichen (Lepraria) in shady spot 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
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
Rough speckled shield lichen (Punctelia rudecta) 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
Rosette lichen (Physcia) on an old dry cracked stump of a red cedar tree in Boonville Cemetery. Bryan, Texas, January 27, 2019
Red patch of sunken bloodspot lichen (Haematomma persoonii) on an oak in Lick Creek Park. College Station, Texas, February 3, 2019
Some rusty red powdery lichen on marble surface in Ebenezer Cemetery near Huntsville, Texas, February 17, 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
Red apothecia of Cladonia lichen in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
Chiseled sunken disk lichen (Circinaria contorta, Aspicilia contorta) 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
Crust of firedot lichen Squamulea squamosa (Caloplaca squamosa) 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
Texture of sunken rim-lichen (Lecanora oreinoides) 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
Sunburst lichen Xanthomendoza weberi (Gallowayella weberi) and some powdery red lichen on a marble tomb in Ebenezer Cemetery near Huntsville, Texas, February 17, 2019
Hoary rosette lichen (Physcia aipolia) mixed with red dots of Nectriaceae or Bionectriaceae fungus on a fallen aspen tree near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019
Red beard lichen (Usnea rubicunda) fallen from a tree after a recent windy day on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2020
Hair-like cluster of red beard lichen (Usnea rubicunda) fallen from a tree after a recent windy day on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2020
Bare-bottomed sunburst lichen (Xanthomendoza weberi, Gallowayella weberi) on a dry red cedar tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
Peppered rock-shield lichen Xanthoparmelia conspersa under oaks and red cedar on sandstone rocks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
Stickpins lichen Mycocalicium subtile or may be other Mycocaliciaceae (Mycocalicium, Chaenothecopsis) on a trunk of a juniper tree (Eastern red cedar) where its branch was cut, around 1.5 meters above ground, in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
Close-up of stickpins lichen Mycocalicium subtile or may be other Mycocaliciaceae (Mycocalicium, Chaenothecopsis) on a trunk of a juniper tree (Eastern red cedar) on spot where its branch was cut in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
Red apothecia of British soldiers cup lichen (Cladonia cristatella) in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 22, 2021
