![](../../pictures/archives/compress/2018/2263/jpeg/02t.jpg) Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
![](../../pictures/archives/compress/2008/644/jpeg/14t.jpg) Two Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
![](../../pictures/archives/compress/2022/3146/jpeg/19t.jpg) Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
![](../../pictures/archives/compress/2018/2263/jpeg/05t.jpg) Mexican hat flowers (Ratibida columnifera) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
![](../../pictures/archives/compress/2022/3109/jpeg/13t.jpg) Leaves of Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
![](../../pictures/archives/compress/2018/2263/jpeg/03t.jpg) Dark colored Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
![](../../pictures/archives/compress/2022/3146/jpeg/21t.jpg) Mexican hat (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
![](../../pictures/archives/compress/2018/2254/jpeg/01t.jpg) Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 2, 2018
![](../../pictures/archives/compress/2009/741/jpeg/24t.jpg) Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
![](../../pictures/archives/compress/2020/2699/jpeg/18t.jpg) Blooming Mexican hat (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2020/2699/jpeg/17t.jpg) Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2014/1408/jpeg/14t.jpg) Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
![](../../pictures/archives/compress/2014/1408/jpeg/25t.jpg) Orange Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
![](../../pictures/archives/compress/2012/1044/jpeg/09t.jpg) Mexican hat flower (Ratibida columnifera) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1044/jpeg/08t.jpg) Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2014/1409/jpeg/01t.jpg) Yellow Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
![](../../pictures/archives/compress/2018/2248/jpeg/05t.jpg) Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
![](../../pictures/archives/compress/2009/745/jpeg/23t.jpg) Cylindrical part of a flower of Mexican hat (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
![](../../pictures/archives/compress/2008/637/jpeg/20t.jpg) Long, cone-shaped receptacle of Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
![](../../pictures/archives/compress/2008/663/jpeg/22t.jpg) Yellow color variant of Mexican hat flower (Ratibida columnifera) on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
![](../../pictures/archives/compress/2020/2698/jpeg/09t.jpg) Mexican hat flowers (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2010/858/jpeg/06t.jpg) Mexican hat flowers (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
![](../../pictures/archives/compress/2010/861/jpeg/17t.jpg) Mexican hat flowers (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
![](../../pictures/archives/compress/2024/3537/jpeg/18t.jpg) Field of black eyed susan and Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
![](../../pictures/archives/compress/2020/2698/jpeg/13t.jpg) Mexican hat flowers (Ratibida columnaris) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2008/663/jpeg/24t.jpg) Mexican hat (Ratibida columnaris) cylindrical flowerhead with dark red-purple disk flowers and yellow and brown ray flowers on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
![](../../pictures/archives/compress/2020/2698/jpeg/12t.jpg) Mexican hat flower (Ratibida columnaris) with a caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2010/858/jpeg/07t.jpg) Flower head of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
![](../../pictures/archives/compress/2008/648/jpeg/08t.jpg) Cylindrical flowerhead of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
![](../../pictures/archives/compress/2023/3339/jpeg/16t.jpg) Basal leaves of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
![](../../pictures/archives/compress/2020/2809/jpeg/13t.jpg) Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
![](../../pictures/archives/compress/2021/3013/jpeg/03t.jpg) Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
![](../../pictures/archives/compress/2020/2809/jpeg/14t.jpg) 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
![](../../pictures/archives/compress/2024/3537/jpeg/09t.jpg) Field of black eyed susan flowers (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
![](../../pictures/archives/compress/2009/725/jpeg/02t.jpg) Field of bluebonnets and paintbrush flowers at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/05t.jpg) Field of bluebonnets and paintbrush flowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2008/644/jpeg/12t.jpg) Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
![](../../pictures/archives/compress/2008/641/jpeg/17t.jpg) Two Mexican hat flowers grown together in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 10, 2008
![](../../pictures/archives/compress/2008/644/jpeg/13t.jpg) Group of Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
![](../../pictures/archives/compress/2008/663/jpeg/23t.jpg) Mexican hat flowers at sunrise in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
![](../../pictures/archives/compress/2008/623/jpeg/11t.jpg) Field of flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2008
![](../../pictures/archives/compress/2007/587/jpeg/20t.jpg) A field of flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2018/2239/jpeg/29t.jpg) Field of flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2024/3537/jpeg/17t.jpg) Field of wildflowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
![](../../pictures/archives/compress/2012/1049/jpeg/12t.jpg) Field of flowers near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
![](../../pictures/archives/compress/2007/587/jpeg/21t.jpg) A field of yellow flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2007/587/jpeg/18t.jpg) Flowers carpeting a field near Visitor complex in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2018/2263/jpeg/08t.jpg) Field of black eyed susan flowers (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/19t.jpg) Field of bluebonnets and cutleaf groundsel flowers from a fence of Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2007/587/jpeg/19t.jpg) Black eye susan flowers carpeting a field near Visitor complex in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2009/724/jpeg/26t.jpg) Field of wildflowers at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2007/588/jpeg/02t.jpg) A field of wildflowers near Old Washington Town Site Loop Trail of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2009/725/jpeg/03t.jpg) Field of bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/04t.jpg) Field of wildflowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2021/2908/jpeg/10t.jpg) Flowers of green milkweed (Asclepias viridis) in a field on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2007/588/jpeg/03t.jpg) 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
![](../../pictures/archives/compress/2021/2908/jpeg/14t.jpg) Opening flowers of green milkweed (Asclepias viridis) in a field on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2021/2908/jpeg/11t.jpg) Cluster of flowers of green milkweed (Asclepias viridis) in a field on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2009/730/jpeg/03t.jpg) Photographer with a tripod taking pictures of a field of bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2009
![](../../pictures/archives/compress/2024/3480/jpeg/05t.jpg) Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2008/663/jpeg/20t.jpg) Mexican hat flower with a bee on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
![](../../pictures/archives/compress/2010/866/jpeg/23t.jpg) Young grasshopper on Mexican hat flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 5, 2010
![](../../pictures/archives/compress/2024/3480/jpeg/22t.jpg) Prickleseed buttercup flowers (Ranunculus muricatus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2008/625/jpeg/06t.jpg) Field of bluebonnet and paintbrush flowers in Washington-on-the-Brazos Historic Site, near Loop trail. Washington, Texas, March 30, 2008
![](../../pictures/archives/compress/2008/625/jpeg/07t.jpg) Field of lupin and paintbrush flowers in Washington-on-the-Brazos Historic Site, near Loop trail. Washington, Texas, March 30, 2008
![](../../pictures/archives/compress/2024/3480/jpeg/11t.jpg) Blue flowers of toad flax (Linaria texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2024/3537/jpeg/20t.jpg) White daisies, black eyed susan, and beebalm flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
![](../../pictures/archives/compress/2024/3480/jpeg/06t.jpg) Blue spiderwort (Tradescantia) flowers and hairy leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2007/588/jpeg/01t.jpg) Mexican Hat wildflower near a loop trail in northern part of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2007/587/jpeg/26t.jpg) Mexican Hat wildflowers on roadside of loop trail in northern part of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
![](../../pictures/archives/compress/2024/3499/jpeg/10t.jpg) Blue and white, snapdragon like flowers of branched broomrape (Orobanche ramosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
![](../../pictures/archives/compress/2008/641/jpeg/16t.jpg) Golden headed weevil (Compsus auricephalus) snout beetle on Mexican hat flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 10, 2008
![](../../pictures/archives/compress/2012/1052/jpeg/10t.jpg) A field near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 8, 2012
![](../../pictures/archives/compress/2018/2239/jpeg/28t.jpg) Dry tree in a field in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2009/723/jpeg/11t.jpg) Field of wildflowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2022/3125/jpeg/14t.jpg) Wildflowers on a field in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
![](../../pictures/archives/compress/2020/2662/jpeg/07t.jpg) Field of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
![](../../pictures/archives/compress/2010/858/jpeg/16t.jpg) Flower head of field thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
![](../../pictures/archives/compress/2018/2239/jpeg/32t.jpg) A field behind a water cystern in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2022/3125/jpeg/01t.jpg) Field of wildflowers near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
![](../../pictures/archives/compress/2024/3611/jpeg/01t.jpg) Flowers of smartweed (Persicaria, Polygonum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024
![](../../pictures/archives/compress/2019/2562/jpeg/15t.jpg) Field of snow-on-the-prairie (Euphorbia bicolor) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
![](../../pictures/archives/compress/2021/2976/jpeg/31t.jpg) Fieldcap mushrooms Agrocybe retigera in a prairie field in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 7, 2021
![](../../pictures/archives/compress/2012/1049/jpeg/13t.jpg) Dense field of Black Eyed Susan near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
![](../../pictures/archives/compress/2022/3125/jpeg/12t.jpg) Field with bluebonnet (Lupinus) near Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
![](../../pictures/archives/compress/2019/2474/jpeg/20t.jpg) Blue field madder (spurwort, Sherardia arvensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
![](../../pictures/archives/compress/2012/1049/jpeg/10t.jpg) Black Eyed Susan and field parsley near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
![](../../pictures/archives/compress/2019/2460/jpeg/26t.jpg) Peeling puffball mushroom (Lycoperdon marginatum) in a field in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
![](../../pictures/archives/compress/2021/2858/jpeg/12t.jpg) Gymnopus mushrooms on a field on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
![](../../pictures/archives/compress/2024/3480/jpeg/12t.jpg) Flowers of blue phacelia (Phacelia patuliflora)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2024/3499/jpeg/08t.jpg) Flowers of red buckeye (Southern buckeye, Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
![](../../pictures/archives/compress/2021/2858/jpeg/13t.jpg) Caps of Gymnopus mushrooms on a field on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
![](../../pictures/archives/compress/2019/2454/jpeg/25t.jpg) Hygroscopic earthstar mushrooms (Astraeus hygrometricus) on a field near oaks in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
![](../../pictures/archives/compress/2012/1049/jpeg/09t.jpg) Field of Black Eyed Susan (Rudbeckia hirta) on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
![](../../pictures/archives/compress/2021/2908/jpeg/13t.jpg) Bluebonnet (Lupinus) in a field of grass on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2019/2433/jpeg/33t.jpg) Spring pinkgill mushrooms Entoloma vernum in grassy field near oaks in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
![](../../pictures/archives/compress/2021/2976/jpeg/32t.jpg) Side view of fieldcap mushrooms Agrocybe retigera on a grassy field in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 7, 2021
![](../../pictures/archives/compress/2021/2908/jpeg/09t.jpg) Green milkweed (Asclepias viridis) in a field on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2010/861/jpeg/16t.jpg) Field of prairie parsley (Polytaenia texana), home of many black swallowtail caterpillars, in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
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