 Blister beetle in genus Nemognatha on thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Blister beetle (Meloidae) in genus Nemognatha on thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
 Tumbling flower beetle and a snout beetle (white-scaled flower weevil, Odontocorynus denticornis) on a black-eyes susan flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Batterfly on a thistle flower (Cirsium) in a dried pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Head of prionid longhorned beetle (hardwood stump borer, Mallodon dasystomus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Crab spider on a thistle Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Prionid longhorned beetle (hardwood stump borer, Mallodon dasystomus, family Cerambycidae, subfamily Prioninae) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Flower of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Flower of prickly poppy (Argemone albiflora) with a beetle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 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, May 3, 2009
 Opening thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Flower of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2023
 Flower bud of a thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Flower head of field thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Thistle flower (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Purple thistle 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
 Golden headed weevil (Compsus auricephalus) snout beetle on Mexican hat flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 10, 2008
 Blue passion flower (Passiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Flower of musk thistle (Carduus nutans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Blister beetles in genus Nemognatha on thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2008
 Yellow flower of sow thistle (Sonchus oleraceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Larva of bess beetle (Odontotaenius disjunctus) under a log in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 24, 2021
 Young leaves and flower buds of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Flower head of musk thistle (Carduus nutans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Close-up of a flower head of musk thistle (Carduus nutans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Larva of bess beetle (Odontotaenius disjunctus) on rotting wood in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 24, 2021
 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
 Prionid longhorned beetle (hardwood stump borer, Mallodon dasystomus) taken from Washington-on-the-Brazos State Historic Site. College Station, Texas, July 12, 2014
 Brown caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Head of prionid longhorned beetle (hardwood stump borer, Mallodon dasystomus) taken from Washington-on-the-Brazos State Historic Site. College Station, Texas, July 12, 2014
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Yellow Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Orange Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Scarab beetle rolling a dung ball in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
 Green grasshopper on a thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
 Violet ruella (Ruellia nudiflora) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Flower of violet ruella (Ruellia nudiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 24, 2021
 Violet flower of Ruellia nudiflora near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 27, 2013
 Thistle (Cirsium engelmannii) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Sow thistle seedling near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 20, 2013
 Thorny rosette of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Winter rosette of a thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 7, 2024
 Winter rosette of some thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
 Winter rosette of sow thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Blooming thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2023
 Close-up of a rosette of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Winter rosette of a thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 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
 Sagittaria like plant in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Butterfly near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Fluffy seeds of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Thorny leaves of a rosette of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Thorny rosette of leaves of a thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Winter rosette of musk thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Winter rosette of some thistle under trees in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 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
 Rosette of leaves of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Spiny leaves of a thistle near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
 Purple winter rosette of sow thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Thorny winter rosette of a thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Basal leaves of bull thistle(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Young leaves of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Winter rosette of sow thistle near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 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
 Thorny basal leaves of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Large shoot of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Large winter rosette of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
 Pattern of a thorny rosette of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Puncturevine (Caltrop, Tribulus terrestris) with a yellow flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Late flower of Indian paintbrush near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Beebalm (Monarda punctata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Powderpuff (Mimosa strigillosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Musk thistle (Carduus nutans) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2021
 Center part of a thorny rosette of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Winter rosette of sow thistle (Sonchus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 Small winter rosette of sow thistle near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 Purple leaves of sow thistle (Sonchus oleraceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Blooming musk thistle (Carduus nutans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Musk thistle (Carduus nutans) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Winter rosette of a thistle under a juniper tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Rosette of sow thistle (Sonchus oleraceus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 20, 2013
 Thorny rosette of leaves of some thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Coastal sandbur (Cenchrus spinifex) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Late blooming Indian paintbrush in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Engelmann s daisy (Engelmannia pinnatifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Zizotes milkweed (Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Prickly peas (Opuntia cactus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Small lizard on a sandy road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Snow-on-the-prairie (Euphorbia bicolor) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
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