 Bur of rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 9, 2012
 Ripening burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Green bur of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Fall colors of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, November 1, 2012
 Staminate flowers of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 16, 2012
 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
 Leaves 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
 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
 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, 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
 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
 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
 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
 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
 Seeds of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, June 22, 2022
 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, October 6, 2019
 Dry seeds of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Green burs of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 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
 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, August 3, 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
 Grasshopper on rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Flowers of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 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
 "Porcupine egg" of cocklebur (Xanthium strumarium) near Onion Creek in McKinney Falls State Park. Austin, Texas, October 26, 2008
 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
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 16, 2020
 Dry last year cocklebur (Xanthium strumarium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 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
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 Dry burs of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Shoot 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
 "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
 Mature black eyed susan flowers in Lick Creek Park. College Station, Texas, May 10, 2012
 Mature flower of black-eyed susan in Lick Creek Park. College Station, Texas, May 22, 2012
 Mature head of black eyed susan flower in Lick Creek Park. College Station, Texas, June 20, 2012
 Mature flower of black-eyed susan (Rudbeckia hirta) in Lick Creek Park. College Station, Texas, May 22, 2012
 Mature ringless honey mushrooms (Desarmillaria caespitosa) in Lick Creek Park. College Station, Texas, October 7, 2024
 Mature ringless honey mushrooms (Desarmillaria caespitosa, former D. tabescens) in Lick Creek Park. College Station, Texas, October 19, 2022
 Mature blackened cluster of ringless honey mushrooms (Desarmillaria caespitosa, former D. tabescens) in Lick Creek Park. College Station, Texas, October 26, 2022
 Dodder (Cuscuta) on rough cocklebur at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Mature ringless honey mushrooms (Desarmillaria caespitosa, former D. tabescens) in deep shade under oaks in Lick Creek Park. College Station, Texas, October 18, 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
 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
 Rough bark of Mexican plum in Lick Creek Park. College Station, Texas, December 11, 2020
 Mature ringless honey mushrooms (Desarmillaria caespitosa) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Lick Creek Park. College Station, Texas, October 8, 2024
 Lichen Cryptothecia striata on rough oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
 Rough tree bark near Racoon Run Trail in Lick Creek Park. College Station, Texas, January 14, 2011
 Rough tree bark on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 17, 2013
 Mature cluster of ringless honey mushrooms (Desarmillaria caespitosa) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Lick Creek Park. College Station, Texas, October 8, 2024
 Mature caps of ringless honey mushrooms (Desarmillaria caespitosa) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Lick Creek Park. College Station, Texas, October 8, 2024
 Leaves of rough-leaf dogwood (Cornus drummondii) in Lick Creek Park. College Station, Texas, March 7, 2023
 Horseweed in Lick Creek Park. College Station, Texas, October 11, 2012
 Oak bark in Lick Creek Park. College Station, Texas, October 2, 2012
 Beautyberry in dew in Lick Creek Park. College Station, Texas, October 11, 2012
 Rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, August 4, 2021
 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 speckled shield lichen (Punctelia rudecta) on a tree in Lick Creek Park. College Station, Texas, February 3, 2019
 Rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, July 29, 2020
 Rough speckled shield lichen (Punctelia rudecta) on a tree in Lick Creek Park. College Station, Texas, February 20, 2019
 Sewage line right of way in Lick Creek Park. College Station, Texas, October 23, 2012
 Deer Run Trail in Lick Creek Park. College Station, Texas, October 27, 2012
 Oak bark texture in Lick Creek Park. College Station, Texas, October 2, 2012
 Rough speckled shield lichen (Punctelia rudecta) on yaupon holly or may be on oak in Lick Creek Park. College Station, Texas, February 3, 2019
 Rough speckled shield lichen (Punctelia rudecta) on tree bark in Lick Creek Park. College Station, Texas, February 3, 2019
 Inflorescence of rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, July 29, 2020
 Stink bug on rough barnyard grass (wild millet, Echinochloa muricata) in Lick Creek Park. College Station, Texas, August 1, 2021
 Red berries of yaupon holly in Lick Creek Park. College Station, Texas, October 9, 2012
 Dry branches in fog on Post Oak Trail in Lick Creek Park. College Station, Texas, October 23, 2012
 Beautyberry (Callicarpa americana) in Lick Creek Park. College Station, Texas, October 2, 2012
 Jogging on Post Oak Trail in Lick Creek Park. College Station, Texas, October 23, 2012
 Sunrise over sewage line right of way in Lick Creek Park. College Station, Texas, October 23, 2012
 Prairie in fog on Post Oak Trail in Lick Creek Park. College Station, Texas, October 23, 2012
 Peppervine (Ampelopsis arborea) in Lick Creek Park. College Station, Texas, October 9, 2012
 Resurrection fern (Pleopeltis polypodioides) in Lick Creek Park. College Station, Texas, October 2, 2012
 Sewage line right of way with morning mist in Lick Creek Park. College Station, Texas, October 23, 2012
 Furry caterpillar on woolly croton in Lick Creek Park. College Station, Texas, October 9, 2012
 Sneezeweed and grasses in dew from Post Oak Trail in Lick Creek Park. College Station, Texas, October 30, 2012
 Pollinating bush of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, October 11, 2012
 Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 9, 2012
 Tree bark with sapsucker holes in Lick Creek Park. College Station, Texas, October 2, 2012
 Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 11, 2012
 Sunrise over prairie on Post Oak Trail in Lick Creek Park. College Station, Texas, October 23, 2012
 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
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