 Buellia or may be Aspicilia, Lecidella lichen on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 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
 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
 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
 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
 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
 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
 Close-up of fringe lichen (Heterodermia)(?) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Close-up of peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 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
 Parmotrema(?) lichen on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Some fringe lichen (Heterodermia)(?) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Fringe lichen (Heterodermia)(?) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Rock-shield lichen (Xanthoparmelia) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Foliose lichen Xanthoparmelia conspersa on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Rosette of fringe lichen (Heterodermia)(?) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Some foliose rock-shield lichen (Xanthoparmelia) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 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
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Rosettes of some foliose rock-shield lichen (Xanthoparmelia) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) with apothecia on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 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
 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
 Close-up of green Cladonia lichen on rocks at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) and rock-dwelling fern Cheilanthes lindheimeri (Myriopteris lindheimeri, lipfern)(?) on sandstone on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Close-up of speckled shield lichen (Punctelia) on a sandstone rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Close-up of salted shell lichen (Coccocarpia palmicola) on a sandstone rock in an oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Orange crustous lichen Caloplaca on a sandstone rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 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
 Curly green moss on sandstone at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Texture of peppered rock-shield lichen (Xanthoparmelia conspersa) on a rock on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Growth of peppered rock-shield lichen (Xanthoparmelia conspersa) on a sandstone rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Yellow crustose rock lichen at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Green Cladonia lichen and mosses on rocks at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Folious lichen Cladonia together with moss on sandstone rocks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Speckled shield lichen (Punctelia) on a sandstone rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Speckled shield lichen (Punctelia) with soredia(?) on a sandstone rock at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Yucca plant on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Yucca leaves on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Peppered rock-shield lichen (Xanthoparmelia conspersa) on sandstone rocks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Greenbrier (Smilax) and oaks on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Winter rosette of a thistle on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Close-up of red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Green moss on a sandstone rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 14, 2024
 Close-up of bright green moss on a sandy side of a road with seeping water at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Leaves of squaw-weed (Senecio ampullaceus) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Central part of winter rosette of a thistle on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Winter rosette of woolly-white (Hymenopappus artemisiaefolius) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 21, 2023
 Close-up of head of orange-striped ribbonsnake on red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Close-up of flat green liverwort Riccia huebeneriana on edge of Flag Ponf after its water level fell on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
 Cladonia(?) lichen on sandstone rocks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Close-up of turbin lichen (Cladonia peziziformis) on a side of a road at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Turbin lichen (Cladonia peziziformis) on sandstone at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 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
 Close-up of a green snake on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
 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
 Close-up of Texas balloonwort (Sphaerocarpos texanus) on edge of Flag Ponf after its water level fell on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
 Salted shell lichen (Coccocarpia palmicola) on sandstone in a ravine at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Fringe lichen together with some hydnoid (tooth) fungus on a dry branch of an oak on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, November 21, 2020
 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
 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
 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
 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
 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
 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
 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
 Close-up of some tall sedge (Carex) in wet area at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Rosette of thistl (Cirsium) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Blooming spiderwort (Tradescantia) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Spanish moss on a tree at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Green mosses on rocks at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Close-up of some resupinate fungus on bark of a large live oak on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 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
 Peppered rock-shield lichen Xanthoparmelia conspersa on sandstone rocks on a slope at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 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
 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
 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
 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
 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
 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
 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
 Spring beauty (Claytonia virginica) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Green moss in a dry rocky site at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Yellow and grey rock lichens at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Blue flower of spiderwort (Tradescantia) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
 Close-up of dog vomit slime mold (Fuligo septica) on a tree on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 26, 2020
 Close-up of red water fern (Azolla filiculoides(?)) in Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Close-up of elbowpatch crust fungus (Fomitiporia punctata group)(?) on a dry oak on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Close-up of flowers of showy blue star (Amsonia illustris) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Close-up of smooth axil-bristle lichen (Myelochroa galbina) on a twig of upland swamp-privet bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 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
 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
 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
 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
 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
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