 Rosette lichen Dirinaria applanata or may be Physcia on smooth bark of hackberry tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Dwarf rosette lichen Physcia neogaea or may be P. aipolia or P. pumilior on smooth bark of hackberry tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Lichen Dirinaria applanata or may be Physcia on smooth bark of hackberry tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Pyxine(?) and white fringe lichen (Heterodermia albicans) on a hackberry tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Foliose lichens on a hackberry tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Bare-bottomed sunburst lichen (Xanthomendoza weberi) on a dry red cedar tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Ramalina dasypoga lichen on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Lichen Ramalina dasypoga on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Small rosette of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Palmetto lichen (Ramalina celastri) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Powdered ruffle lichen (Parmotrema hypotropum) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Bushy beard lichen (Usnea strigosa) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Peruvian cartilage lichen (Ramalina peruviana) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Perforated ruffle lichen (Parmotrema perforatum) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Southern strap (cartilage) lichen (Ramalina stenospora) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Perforated ruffle lichen (Parmotrema perforatum) on a twig of a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Bushy beard lichen (Usnea strigosa) with apothecia on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Firedot lichen Caloplaca squamosa on a sandstone outcrop at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Winter rosette of a thistle at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021
 Peppered rock-shield lichen Xanthoparmelia conspersa on a sandstone outcrop at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Rock-olive lichen (Peltula) 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) 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
 Palmetto lichen (Ramalina celastri) on a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Pebbled pixie-cup lichen (Cladonia pyxidata) between rocks on a sandstone outcrop at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Southern strap lichen (Ramalina stenospora) on a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 A lichen with olive green apothecia 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
 Bushy beard lichen (Usnea strigosa) on a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Powdered ruffle lichen (Parmotrema hypotropum) on bushes in semi-open area 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
 Texture of peppered rock-shield lichen Xanthoparmelia conspersa on a sandstone outcrop at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Common tree dwelling moss Leucodon julaceous on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 A lichen with olive green apothecia on a rock near the ground 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
 Pattern of a lichen with olive green apothecia 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
 Various fruticose lichens on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Winter rosette of stemless evening primrose (Oenothera triloba) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021
 Salted shell lichen (Coccocarpia palmicola) on a large 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
 Turbin lichen (Cladonia peziziformis) on roadside at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 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
 Palm ruffle lichen (Parmotrema tinctorum) on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Ruffle lichen Parmotrema submarginale(?) on a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Yellow cobblestone lichen Acarospora socialis on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Firedot lichen Caloplaca squamosa on sandstone outcrops at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 Powdered ruffle lichen (Parmotrema hypotropum) on bushes at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 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
 Firedot lichen Caloplaca squamosa on sandstone at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Rough speckled shield lichen (Punctelia rudecta) on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Flowering fringe lichen (Heterodermia echinata) on a fallen oak twig at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Resupinate polypore mushroom Phellinus on a live oak near the lake at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Salted shell lichen (Coccocarpia palmicola) on sandstone in shade in an oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Soredia of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Powdered ruffle lichen (Parmotrema hypotropum) on a thin twig of a bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Firedot lichen 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
 Perforated ruffle lichen (Parmotrema perforatum) with apothecia on a fallen oak branch 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
 Rosettes of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone 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
 Salted shell lichen (Coccocarpia palmicola) on a large rock in a forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 Polypore mushroom Subantrodia juniperina on a cut red cedar tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021
 Tomentella(?) fungus under an oak log at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 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
 Firedot lichen 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
 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
 Powdered ruffle lichen (Parmotrema hypotropum) on bushes in semi-open area 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
 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 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
 Crust of firedot lichen 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
 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
 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
 Smooth axil-bristle lichen (Myelochroa galbina) on a thin twig of a bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Tree dwelling moss Leucodon julaceous on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 Trentepohlia (green alga) under an oak log at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Fallen berries of red cedar at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Formerly flooded area with dry oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Margin of polypore mushroom Subantrodia juniperina on a cut red cedar tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021
 Peppered rock-shield lichen (Xanthoparmelia conspersa) and sunken rim-lichen (Lecanora oreinoides) on a rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Turbin lichen (Cladonia peziziformis) on side surface of sandstone or limestone rocks near the ground 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 outcrop at the road descent 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 outcrop at the road descent 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
 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
 Powdered ruffle lichen (Parmotrema hypotropum) on a twig of a bush in a half-open area 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
 Resupinate polypore mushroom on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Resupinate polypore fungus Ceriporia(?) under an oak log at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Some corticioid (crust) fungus under a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Trentepohlia (green alga) under a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Texture of resupinate polypore mushroom on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Resupinate polypore fungus Ceriporia(?) under a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Close-up of resupinate polypore mushroom on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Jelly mushroom Tremella aurantia on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 Bicoloured bracket mushroom (Gelatoporia dichroa) on a dry red cedar tree without bark at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2020
 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
 Old patch of peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent 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
 Soredia of peppered rock-shield lichen Xanthoparmelia conspersa on sandstone outcrop at the road descent at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
 Pattern of resupinate polypore fungus Ceriporia(?) under a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
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