 Blooming summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 3, 2014
 Summer-blooming thistle flower (Cirsium engelmannii) in Lick Creek Park, on Iron Bridge Trail. College Station, July 6, 2008
 Summer-blooming thistle flower (Cirsium engelmannii) from above in Lick Creek Park, on Iron Bridge Trail. College Station, July 6, 2008
 Summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 3, 2014
 Summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 10, 2014
 Flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flower bud of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 1, 2014
 Summer-blooming thistle flower (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 10, 2014
 Flower bud of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 10, 2014
 Flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park, on Deer Run Trail. College Station, Texas, June 21, 2008
 Summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2022
 Summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 27, 2022
 Flower bud of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, March 31, 2024
 Flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2022
 Flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 13, 2022
 Leaves of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, March 12, 2024
 Bumblebee on a summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 27, 2022
 Flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 27, 2022
 Flower bud of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 13, 2022
 Opening flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2022
 Unopened flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 13, 2022
 Flower head of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2022
 Summer-blooming thistles (Cirsium engelmannii) in Lick Creek Park, on Deer Run Trail. College Station, July 6, 2008
 Blooming thistle (Cirsium engelmannii?) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, July 30, 2008
 Blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 26, 2012
 Blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2012
 Florets of a thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 7, 2012
 Thistle (Cirsium engelmannii) on sewage line right of way in Lick Creek Park. College Station, Texas, July 7, 2012
 Thistle flower heads (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 7, 2012
 Flower of a thistle (Cirsium engelmannii(?)) near Deer Run Trail in Lick Creek Park. College Station, Texas, June 8, 2008
 Thistle (Cirsium engelmannii) flower bud in Lick Creek Park. College Station, Texas, June 10, 2012
 Flower of thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2012
 Thistle (Cirsium engelmannii) flower in Lick Creek Park. College Station, Texas, June 30, 2012
 Thistle (Cirsium engelmannii) heads in Lick Creek Park. College Station, Texas, June 22, 2012
 Flower of thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 26, 2012
 Close up of a thistle (Cirsium engelmannii) flower bud in Lick Creek Park. College Station, Texas, June 10, 2012
 Globular flower bud of a thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 10, 2012
 Spiny flower bud of a thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 20, 2012
 Thistle (Cirsium engelmannii) flower buds in Lick Creek Park. College Station, Texas, June 10, 2012
 Close up of a flower of thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 22, 2012
 Spiny globular flower bud of a thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 10, 2012
 Seeds of yellow thistle (Bull thistle, Cirsium horridulum) on sewage line right-of-way in Lick Creek Park. College Station, Texas, May 2, 2023
 Fluffy seeds of yellow thistle (Bull thistle, Cirsium horridulum) on sewage line right-of-way in Lick Creek Park. College Station, Texas, May 2, 2023
 Arrangement of seeds of yellow thistle (Bull thistle, Cirsium horridulum) on sewage line right-of-way in Lick Creek Park. College Station, Texas, May 2, 2023
 Blooming yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 5, 2019
 Fluffy seeds of thistle (Cirsium) in Lick Creek Park. College Station, Texas, May 20, 2014
 Blooming common witchgrass (Panicum capillare) on Raccoon Run Trail on Raccoon Run Trail in Lick Creek Park. College Station, Texas, August 23, 2020
 Fluffy seeds of thistle (Cirsium) in Lick Creek Park. College Station, Texas, August 1, 2021
 Fluffy seeds of bull thistle (Cirsium horridulum) in Lick Creek Park. College Station, Texas, May 7, 2018
 Yellow thistle (Bull thistle, Cirsium horridulum) on Post Oak Trail in Lick Creek Park. College Station, Texas, March 26, 2019
 Flower bud of yellow thistle (Bull thistle, Cirsium horridulum) on Post Oak Trail in Lick Creek Park. College Station, Texas, March 26, 2019
 Fluffy seeds of salt-marsh fleabane (Pluchea odorata) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, October 15, 2020
 Blooming camphorweed (Pluchea camphorata) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, August 28, 2020
 Yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 6, 2022
 Yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, March 31, 2024
 Yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 5, 2019
 Yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 5, 2018
 Yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 18, 2022
 Yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 12, 2024
 Flower of yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 5, 2019
 Flower bud of yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 14, 2019
 Flower bud of yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 11, 2018
 Flower bud of summer thistle in Lick Creek Park. College Station, Texas, July 22, 2014
 Flower of summer thistle in Lick Creek Park. College Station, Texas, July 22, 2014
 Flower of summer thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Rosette of leaves of yellow thistle (Bull thistle, Cirsium horridulum) in Lick Creek Park. College Station, Texas, January 10, 2024
 Yellow thistle (Bull thistle, Cirsium horridulum) on a pipeline clearing in Lick Creek Park. College Station, Texas, March 24, 2021
 Flower of yellow thistle (Bull thistle, Cirsium horridulum) with a bronze beetle in Lick Creek Park. College Station, Texas, April 5, 2019
 Metallic beetles in yellow thistle (Bull thistle, Cirsium horridulum) on a pipeline right-of-way in Lick Creek Park. College Station, Texas, April 12, 2021
 Yellow thistle (Bull thistle, Cirsium horridulum) on a recently built pipeline in Lick Creek Park. College Station, Texas, April 12, 2021
 Yellow thistle (Bull thistle, Cirsium horridulum) on a forest opening over a sewage line in Lick Creek Park. College Station, Texas, March 31, 2023
 Winter rosette of yellow thistle (Bull thistle, Cirsium horridulum) on a pipeline clearing in Lick Creek Park. College Station, Texas, March 11, 2021
 Immature seed head of yellow thistle (Bull thistle, Cirsium horridulum) on sewage line right-of-way in Lick Creek Park. College Station, Texas, May 2, 2023
 Winter rosette of yellow thistle (Bull thistle, Cirsium horridulum) on a pipeline clearing in Lick Creek Park. College Station, Texas, February 25, 2021
 Basal leaves of yellow thistle (Bull thistle, Cirsium horridulum) on a pipeline clearing in Lick Creek Park. College Station, Texas, February 25, 2021
 Seeds of thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Large thorny rosette of yellow thistle (Bull thistle, Cirsium horridulum) on a pipeline clearing in Lick Creek Park. College Station, Texas, February 25, 2021
 "Exploding" seeds of a thistle in Lick Creek Park. College Station, Texas, July 30, 2009
 Katydid on seeds of thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Inflorescence of common witchgrass (Panicum capillare) on Raccoon Run Trail on Raccoon Run Trail in Lick Creek Park. College Station, Texas, August 23, 2020
 Close up of "exploding" seeds of a thistle in Lick Creek Park. College Station, Texas, July 30, 2009
 Thistle with seeds and a green lynx spider in Lick Creek Park. College Station, Texas, July 30, 2009
 Blooming thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Beaked panicgrass (Panicum anceps) near Raccoon Run Trail in Lick Creek Park. College Station, Texas, July 22, 2020
 Seeds of salt-marsh fleabane (Pluchea odorata) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, December 14, 2012
 Longleaf woodoats (Chasmanthium sessiliflorum) grass under oaks near Raccoon Run Trail in Lick Creek Park. College Station, Texas, July 22, 2020
 Some blooming bush on Raccoon Run Trail in Lick Creek Park. College Station, Texas, April 22, 2021
 Rosette of thistle (Cirsium) in Lick Creek Park. College Station, Texas, February 27, 2023
 Flower of thistle (Cirsium) in Lick Creek Park. College Station, Texas, August 4, 2021
 Fluffy seeds of salt-marsh fleabane (Pluchea odorata) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, December 14, 2012
 Blooming Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, March 20, 2023
 Winter rosette of thistle (Cirsium) in dew in Lick Creek Park. College Station, Texas, January 23, 2023
 Thorny shoot of thistle (Cirsium) in Lick Creek Park. College Station, Texas, March 7, 2023
 Thorny leaves of thistle (Cirsium) in Lick Creek Park. College Station, Texas, February 13, 2024
 Winter rosette of leaves of thistle (Cirsium) in Lick Creek Park. College Station, Texas, February 1, 2021
 Yellow flower of bull thistle (Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 18, 2022
 Winter rosette of bull thistle (Cirsium horridulum) with freeze in Lick Creek Park. College Station, Texas, January 3, 2022
 Leaf of a thistle (Cirsium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 22, 2024
 Blooming yellow thistle (Bull thistle, Cirsium horridulum) in Bastrop State Park. Bastrop, Texas, April 25, 2021
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