 Batterfly on a thistle flower (Cirsium) in a dried pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Thistle flower (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Thistle flower (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
 Thistle flower (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Flower bud of a thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Flower of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2023
 Young leaves and flower buds of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Flower bud of Texas thistle (Cirsium texanum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Flower buds of Texas thistle (Cirsium texanum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 3, 2021
 Blooming thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2023
 Thistle (Cirsium engelmannii) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Firewheel flower (Gaillardia pulchella) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Firewheel flower (Gaillardia pulchella) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Firewheel flower (Gaillardia pulchella) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Winter rosette of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
 Young leaves of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Large shoot of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Fluffy seeds of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Dry seed heads of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Thorny leaves of some thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Young leaves of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Rosette of leaves of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Flower of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Details of a flower of firewheel (Gaillardia pulchella) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Mexican hat flower (Ratibida columnaris) with a caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Thorny rosette of leaves of some thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Flower of showy evening primrose (Oenothera speciosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Flower spike of largebracted plantain (Plantago aristata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Pattern of winter rosette of leaves of some thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Some white five-petals flower on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Back lit flower of showy evening primrose (Oenothera speciosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Flower buds of Snow-on-the-prairie (Euphorbia bicolor) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 15, 2020
 Alyssum like flower with bull nettle on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Flower buds of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Leaves of bull thistle (Cirsium horridulum) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 White prickly poppy flower on field near Old Washington Town Site Loop Trail of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 Blooming Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Flower of purple gerardia (false foxglove, Agalinis purpurea) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Flower spike of giant reed (Arundo donax) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 27, 2020
 Rosette of leaves of bull thistle (Cirsium horridulum) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Flower of common red corn poppy (Papaver rhoeas) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Flower heads of green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Close-up of a flower of common red corn poppy (Papaver rhoeas) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 White flower of showy evening primrose (Oenothera speciosa) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Large flower of showy evening primrose (Oenothera speciosa) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Cockleshell mushrooms Lentinellus castoreus on an oak log in red cedar forest Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2020
 Flower of showy evening primrose (Oenothera speciosa) with holes from insects on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Flower of shaggy portulaca (rose purslane, Portulaca pilosa) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 2, 2020
 Magnolia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Flower of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Paintbrush flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Back lit flower of buttercup in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 White magnolia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Winecup flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
 Dry flower spike of plantain in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
 Verbena (vervain) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Prairie parsley flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2008
 Bluebonnet flower in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Herbertia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Flower of dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Old pecan tree near Brazos River in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 25, 2020
 Old trees near Brazos River in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 25, 2020
 White gaura flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
 Prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Thistle flower near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2008
 Flower of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 Purple thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 White flower of prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 White gaura flower in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 5, 2008
 Bluebonnet flower in morning dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Flower of an apple-like tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 15, 2009
 Paintbrush flower in morning dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Indian paintbrush flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Flower head of field thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Opening thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 2, 2018
 Parts of paintbrush flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Firewheel flower (Gaillardia pulchella) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
 Buttercup flower near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 8, 2009
 Flower head of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Grasshopper on a white prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
 Yellow Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Pink spiderwort (tradescantia) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
 Flower buds of bluebonnet (lupin) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Flower of a common prairie grass in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2021
 Flower buds of mustang grape in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Katidid on a flower of false dandelion in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Mexican hat flower with a bee on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 Pink flower of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Black-eyes susan flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Flower of mallow family near a museum in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Flower spike of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
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