 Burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Bur of rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 9, 2012
 Mature bur of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Ripening burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Green burs of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 Staminate flowers of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 16, 2012
 Fall colors of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, November 1, 2012
 Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 13, 2023
 Blooming cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 Cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Shoot of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Underside of leaves of cocklebur (Xanthium strumarium) damaged by cocklebur rust fungus (Puccinia xanthii), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Upper and lowers sides of leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Teliospores (in KOH, low magnification) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium) collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Large teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Details of teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Biseptate teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 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
 Seeds of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, June 22, 2022
 Rough Cocklebur (Xanthium strumarium) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Grasshopper on rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 6, 2019
 Rough Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 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) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Dry seeds of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Blooming rough cocklebur (Xanthium strumarium) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Flowers of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 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
 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
 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
 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
 Bur of cocklebur (Xanthium strumarium) on north shore of Lake Somerville. Texas, September 27, 2008
 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
 "Porcupine egg" of cocklebur (Xanthium strumarium) near Onion Creek in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Dry last year cocklebur (Xanthium strumarium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 16, 2020
 Shoot of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Dry burs of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Seed capsules of cocklebur (Xanthium strumarium) taken from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020
 "Porcupine eggs" of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 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
 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
 Fruits of green passion flower (Passiflora lutea) in Lick Creek Park. College Station, Texas, September 16, 2012
 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
 Rough bark of Mexican plum in Lick Creek Park. College Station, Texas, December 11, 2020
 Lichen Cryptothecia striata on rough oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
 Rough tree bark on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 17, 2013
 Rough tree bark near Racoon Run Trail in Lick Creek Park. College Station, Texas, January 14, 2011
 Leaves of rough-leaf dogwood (Cornus drummondii) in Lick Creek Park. College Station, Texas, March 7, 2023
 Rough speckled shield lichen (Punctelia rudecta) on a tree in Lick Creek Park. College Station, Texas, February 3, 2019
 Rough speckled shield lichen (Punctelia rudecta) on a tree in Lick Creek Park. College Station, Texas, February 20, 2019
 Rough speckled shield lichen (Punctelia rudecta) on a tree in Lick Creek Park. College Station, Texas, February 3, 2019
 Rough bark of winged elm (Ulmus alata) on Post Oak Trail in Lick Creek Park. College Station, Texas, November 27, 2020
 Rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, July 29, 2020
 Rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, August 4, 2021
 Rough speckled shield lichen (Punctelia rudecta) on yaupon holly or may be on oak in Lick Creek Park. College Station, Texas, February 3, 2019
 Stink bug on rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, August 1, 2021
 Inflorescence of rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, July 29, 2020
 Rough speckled shield lichen (Punctelia rudecta) on tree bark in Lick Creek Park. College Station, Texas, February 3, 2019
 Green lynx spider on soft golden aster in Lick Creek Park. College Station, Texas, September 12, 2010
 Green brittlegill (Russula) mushrooms with yellow center in Lick Creek Park. College Station, Texas, September 15, 2020
 Green lynx spider on a passion flower (passiflora) in Lick Creek Park. College Station, Texas, September 23, 2009
 Foggy morning in Lick Creek Park. College Station, Texas, September 27, 2012
 Sewage line right of way in Lick Creek Park. College Station, Texas, September 7, 2012
 Sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, September 16, 2012
 Green lynx spider on purple passion flower (passiflora) in Lick Creek Park. College Station, Texas, September 23, 2009
 Green flowers of upland swamp-privet (Forestiera ligustrina) in Lick Creek Park. College Station, Texas, September 18, 2018
 Rough barnyard grass (wild millet, Echinochloa muricata) on a recent sewage line right of way in Lick Creek Park. College Station, Texas, August 14, 2020
 Rough barnyard grass (wild millet, Echinochloa muricata) on a recent forest cutting in Lick Creek Park. College Station, Texas, July 23, 2018
 Rough barnyard grass (wild millet, Echinochloa muricata) on a recent sewage line right of way in Lick Creek Park. College Station, Texas, July 22, 2020
 Beautyberry (Callicarpa americana) in Lick Creek Park. College Station, Texas, September 7, 2012
 Iron Bridge Trail in Lick Creek Park. College Station, Texas, September 27, 2012
 Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 24, 2012
 Close-up of rough barnyard grass (wild millet, Echinochloa muricata) on a recent sewage line right of way in Lick Creek Park. College Station, Texas, July 22, 2020
 Spikelet of rough barnyard grass (wild millet, Echinochloa muricata) on a recent forest cutting in Lick Creek Park. College Station, Texas, July 23, 2018
 Rough green snake (Opheodrys aestivus) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
 Sumpweed (Iva annua) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 24, 2012
 Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 24, 2012
 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
 Mistflower (Eupatorium coelestinum, Wild ageratum) in Lick Creek Park. College Station, Texas, September 16, 2012
 Flowers of bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 24, 2012
 White gaura (wild honeysuckle, bee blossom) in Lick Creek Park. College Station, Texas, September 1, 2012
 Fruits of Horse Nettle (Potato-weed, Solanum) in Lick Creek Park. College Station, Texas, September 16, 2012
 Flowers of trailing fuzzy-bean (Strophostyles helvola) in Lick Creek Park. College Station, Texas, September 16, 2012
 Morning glory (Ipomoea cordatotriloba) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 24, 2012
 Lance-leaved water-willow (Justicia ovata var. lanceolata) in Lick Creek Park. College Station, Texas, September 16, 2012
 Back lit flowers of trailing fuzzy-bean (Strophostyles helvola) in Lick Creek Park. College Station, Texas, September 16, 2012
 Green berries of greenbrier (Smilax) in Bee Creek Park in College Station, Texas, June 21, 2012
 Sumpweed (Iva annua) and Morning glory (Ipomoea cordatotriloba) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 24, 2012
 Tiny blue flower of Lance-leaved water-willow (Justicia ovata var. lanceolata) in Lick Creek Park. College Station, Texas, September 16, 2012
 Purple gerardia (prairie agalinis, Agalinis purpurea) in Lick Creek Park. College Station, Texas, September 24, 2012
 Unopened flower of Purple gerardia (prairie agalinis, Agalinis purpurea) in Lick Creek Park. College Station, Texas, September 24, 2012
 Close up of a flower of Purple gerardia (prairie agalinis, Agalinis purpurea) in Lick Creek Park. College Station, Texas, September 24, 2012
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