 Rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Rough Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Dry seeds of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Flowers of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Rough Cocklebur (Xanthium strumarium) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 6, 2019
 Back lit leaves of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 6, 2019
 Small green grasshopper on leaves of rough cocklebur at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Flowers of rough cocklebur (Xanthium strumarium) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Blooming rough cocklebur (Xanthium strumarium) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Dry burs of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 16, 2020
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 Shoot of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 "Porcupine eggs" of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Seed capsules of cocklebur (Xanthium strumarium) taken from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020
 Close-up of seed capsules of cocklebur (Xanthium strumarium) taken from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020
 Staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
 Green flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
 Close up of staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
 Dry last year cocklebur (Xanthium strumarium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Dodder (Cuscuta) on rough cocklebur at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Strands of dodder (Cuscuta) on rough cocklebur at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Orange strands of dodder (Cuscuta) on rough cocklebur at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Flowers of cocklebur (Xanthium strumarium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
 Burs of cocklebur (Xanthium strumarium) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
 Grasshopper ona plant at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Grasshopper on bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
 Close-up of a grasshopper on bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
 Yellow grasshopper on sumpweed on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Brown grasshopper on sumpweed on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Grasshopper on snake cotton (Froelichia) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Small spider eating a big green grasshopper on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Bur of cocklebur (Xanthium strumarium) on north shore of Lake Somerville. Texas, September 27, 2008
 Rough green snake (Opheodrys aestivus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 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
 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
 Rough green snake (Opheodrys aestivus) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
 Rough green snake (Opheodrys aestivus) on a seedling of red cedar on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
 Leaves of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Both sides of a leaf of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Close-up of a leaf of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Leaves of Ipomoea lacunosa damaged by rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Texture of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Pattern of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Details of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Green bur of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Blooming whitestar morning-glory (Ipomoea lacunosa) with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Orange spots of rust fungus Coleosporium ipomoeae on underside of a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Texture of orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Close-up of orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Leaves of whitestar morning-glory (Ipomoea lacunosa) with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Underside of a leaf of whitestar morning-glory (Ipomoea lacunosa) with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Flower of whitestar morning-glory (Ipomoea lacunosa) and a leaf with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Whitestar morning-glory (Ipomoea lacunosa) with orange spots from rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Purple gerardia (prairie agalinis, Agalinis purpurea) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Whitestar morning-glory (Ipomoea lacunosa) in bloom with orange spots from rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Leaves of whitestar morning-glory (Ipomoea lacunosa) with orange spots from rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Whitestar morning-glory (Ipomoea lacunosa) with rust fungus Coleosporium ipomoeae in a frequently flooded area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Fire ants eating a grasshopper on a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009
 Back lit flowers of purple gerardia (prairie agalinis, Agalinis purpurea) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Dry oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Partridge pea at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Oak skeletons at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Greenbrier at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Dry oak trees at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Whitestar morning-glory (Ipomoea lacunosa) with a flower and a leaf with orange spots from rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Shoot of coralberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Tilted oak trees at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Sandy path at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Creeping vines at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Old cattle pond at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Mowed path at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Vines and oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Greenbrier (Smilax) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Oaks and bushes at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Flock of pelicans at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Dead oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Grasshoppers on a dry plant at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Blooming buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Path in oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Blooming buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Sparse oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Buttonbush flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Overgrown oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Ruellia flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Some black moth at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Dayflower (Commelina) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Masses of greenbrier (Smilax) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Winter rosette of a thistle at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021
 Red lovegrass (Eragrostis secundiflora) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Oaks overgrown by greenbrier at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Buttonbush (Cephalanthus occidentalis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Young leaves of hackberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Orange seeds of buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Buttonbush seed head at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 A spider on little bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
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