![](../../pictures/archives/compress/2012/1044/jpeg/11t.jpg) White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1064/jpeg/10t.jpg) White prickly poppy (Argemone albiflora) with a katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
![](../../pictures/archives/compress/2012/1074/jpeg/23t.jpg) Ovary of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
![](../../pictures/archives/compress/2008/631/jpeg/07t.jpg) White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
![](../../pictures/archives/compress/2018/2244/jpeg/02t.jpg) White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
![](../../pictures/archives/compress/2018/2248/jpeg/08t.jpg) White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
![](../../pictures/archives/compress/2022/3137/jpeg/01t.jpg) White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
![](../../pictures/archives/compress/2022/3137/jpeg/02t.jpg) Flowers of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
![](../../pictures/archives/compress/2018/2244/jpeg/12t.jpg) Blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
![](../../pictures/archives/compress/2022/3137/jpeg/04t.jpg) Blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
![](../../pictures/archives/compress/2022/3137/jpeg/05t.jpg) Upper view of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
![](../../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/2008/663/jpeg/26t.jpg) White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
![](../../pictures/archives/compress/2009/745/jpeg/18t.jpg) White flower of prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
![](../../pictures/archives/compress/2008/651/jpeg/16t.jpg) White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 14, 2008
![](../../pictures/archives/compress/2009/751/jpeg/02t.jpg) Grasshopper on a white prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
![](../../pictures/archives/compress/2008/662/jpeg/24t.jpg) Young katydid on white prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 3, 2008
![](../../pictures/archives/compress/2014/1454/jpeg/09t.jpg) White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
![](../../pictures/archives/compress/2019/2558/jpeg/09t.jpg) White prickly poppy (Argemone albiflora) with katidid in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 10, 2019
![](../../pictures/archives/compress/2024/3480/jpeg/10t.jpg) Leaves of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2024/3457/jpeg/21t.jpg) Seedling of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
![](../../pictures/archives/compress/2009/748/jpeg/17t.jpg) Opening flower of white prickly poppy (pricklepoppy, Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
![](../../pictures/archives/compress/2023/3339/jpeg/29t.jpg) Winter rosette of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
![](../../pictures/archives/compress/2009/751/jpeg/03t.jpg) Close up of a green grasshopper sitting on a white prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
![](../../pictures/archives/compress/2020/2631/jpeg/16t.jpg) Winter rosette of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
![](../../pictures/archives/compress/2024/3457/jpeg/22t.jpg) Rosette of leaves of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
![](../../pictures/archives/compress/2022/3185/jpeg/02t.jpg) Late blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
![](../../pictures/archives/compress/2008/637/jpeg/23t.jpg) Prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
![](../../pictures/archives/compress/2022/3125/jpeg/07t.jpg) Leaves of prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
![](../../pictures/archives/compress/2022/3132/jpeg/23t.jpg) Prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2023/3339/jpeg/30t.jpg) Winter rosette of white prickly poppy (Argemone albiflora) with water drops in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
![](../../pictures/archives/compress/2008/637/jpeg/21t.jpg) Prickly poppy flower with immature katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
![](../../pictures/archives/compress/2022/3132/jpeg/21t.jpg) Flower of prickly poppy (Argemone albiflora) with a beetle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2024/3611/jpeg/02t.jpg) White prickly poppy (Argemone albiflora) 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/2009/745/jpeg/19t.jpg) White flower of prickly poppy (pricklepoppy, Argemone albiflora) with orange center and delicate crinkled petals in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
![](../../pictures/archives/compress/2022/3137/jpeg/03t.jpg) Hover fly (syrphid) on a flower of w hite prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
![](../../pictures/archives/compress/2014/1409/jpeg/04t.jpg) Prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
![](../../pictures/archives/compress/2020/2703/jpeg/25t.jpg) Flower of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
![](../../pictures/archives/compress/2024/3469/jpeg/05t.jpg) Rosette of leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 7, 2024
![](../../pictures/archives/compress/2023/3357/jpeg/14t.jpg) Young leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
![](../../pictures/archives/compress/2023/3335/jpeg/03t.jpg) Basal leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
![](../../pictures/archives/compress/2023/3335/jpeg/01t.jpg) Small rosette of leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
![](../../pictures/archives/compress/2023/3335/jpeg/02t.jpg) Leaves with water drops of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
![](../../pictures/archives/compress/2012/1044/jpeg/14t.jpg) Yellow flowers of Prickly pear cactus (Opuntia) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1000/jpeg/03t.jpg) Pad of prickly pears in a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
![](../../pictures/archives/compress/2012/1046/jpeg/15t.jpg) White flowers of Bull Nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
![](../../pictures/archives/compress/2022/3133/jpeg/04t.jpg) Dry pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2011/936/jpeg/18t.jpg) Blooming prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
![](../../pictures/archives/compress/2022/3133/jpeg/05t.jpg) Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2022/3132/jpeg/24t.jpg) Vegetative shoot of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2021/2898/jpeg/35t.jpg) Prickly flower buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 3, 2021
![](../../pictures/archives/compress/2022/3133/jpeg/24t.jpg) Prickly flow buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2012/1113/jpeg/01t.jpg) White gaura flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
![](../../pictures/archives/compress/2020/2699/jpeg/01t.jpg) Common red corn poppy (Papaver rhoeas) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2022/3156/jpeg/22t.jpg) Pad of prickly pears (Opuntia) with a bug in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
![](../../pictures/archives/compress/2011/989/jpeg/07t.jpg) Prickly pear pad in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
![](../../pictures/archives/compress/2011/984/jpeg/02t.jpg) Prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
![](../../pictures/archives/compress/2011/989/jpeg/08t.jpg) Prickly pear (Opuntia) pad in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
![](../../pictures/archives/compress/2012/1100/jpeg/21t.jpg) Small White Morning Glory (Pitted Morningglory, Ipomoea lacunosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 25, 2012
![](../../pictures/archives/compress/2014/1466/jpeg/03t.jpg) Prickly peas (Opuntia cactus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
![](../../pictures/archives/compress/2019/2454/jpeg/12t.jpg) Prickly pear cacti and dry trees in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
![](../../pictures/archives/compress/2020/2699/jpeg/12t.jpg) Yellow flowers of prickly pears (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2019/2454/jpeg/13t.jpg) Prickly pear cacti (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
![](../../pictures/archives/compress/2020/2698/jpeg/10t.jpg) Common red corn poppy (Papaver rhoeas) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2022/3132/jpeg/25t.jpg) White phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2021/2898/jpeg/24t.jpg) Woolly-white (Hymenopappus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 3, 2021
![](../../pictures/archives/compress/2018/2244/jpeg/03t.jpg) Woolly-white (Hymenopappus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
![](../../pictures/archives/compress/2008/627/jpeg/23t.jpg) White gaura flower in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 5, 2008
![](../../pictures/archives/compress/2018/2248/jpeg/15t.jpg) White phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
![](../../pictures/archives/compress/2024/3480/jpeg/02t.jpg) Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2018/2239/jpeg/23t.jpg) Pads of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2014/1408/jpeg/21t.jpg) Prickly seeds of Hedge Parsley (Torilis arvensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
![](../../pictures/archives/compress/2020/2654/jpeg/07t.jpg) Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
![](../../pictures/archives/compress/2020/2662/jpeg/16t.jpg) Dry pad skeleton of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
![](../../pictures/archives/compress/2022/3195/jpeg/08t.jpg) Dry skeleton of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
![](../../pictures/archives/compress/2012/1044/jpeg/20t.jpg) Opening thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1046/jpeg/13t.jpg) Flowers of Chinese privet in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
![](../../pictures/archives/compress/2012/1044/jpeg/10t.jpg) Flowers of Chinese privet in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1046/jpeg/18t.jpg) Beebalm (Monarda punctata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
![](../../pictures/archives/compress/2008/631/jpeg/19t.jpg) White bishops weed-like flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
![](../../pictures/archives/compress/2021/2909/jpeg/20t.jpg) Woolly-white (Hymenopappus artemisiaefolius) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2020/2698/jpeg/11t.jpg) 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
![](../../pictures/archives/compress/2020/2698/jpeg/23t.jpg) Common red corn poppy (Papaver rhoeas) in bloom on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2008/679/jpeg/12t.jpg) Heart shaped leaf of greenbrier (prickly-ivy, smilax) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2008
![](../../pictures/archives/compress/2022/3179/jpeg/18t.jpg) Prickly seeds of wild carrot (Daucus pusillus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
![](../../pictures/archives/compress/2013/1318/jpeg/16t.jpg) Pads of prickly pear cactus on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
![](../../pictures/archives/compress/2009/745/jpeg/24t.jpg) Young shoot of greenbrier vine (prickly-ivy, smilax, sarsaparilla) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
![](../../pictures/archives/compress/2022/3195/jpeg/07t.jpg) Rusty pads of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
![](../../pictures/archives/compress/2024/3480/jpeg/03t.jpg) Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2023/3334/jpeg/30t.jpg) Purplish pads of a prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
![](../../pictures/archives/compress/2019/2530/jpeg/03t.jpg) Prickly flowers of Hooker s eryngo (Eryngium hookeri) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 16, 2019
![](../../pictures/archives/compress/2012/1044/jpeg/16t.jpg) Umbrella of Prairie parsley flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1044/jpeg/15t.jpg) False dandelion (Pyrrhopappus carolinianus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../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/2012/1044/jpeg/19t.jpg) Engelmann s daisy (Engelmannia peristenia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1044/jpeg/17t.jpg) Spotted beebalm (Monarda punctata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
![](../../pictures/archives/compress/2012/1100/jpeg/20t.jpg) Flower of Small White Morning Glory (Whitestar, Pitted Morningglory, Ipomoea lacunosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 25, 2012
![](../../pictures/archives/compress/2021/2909/jpeg/26t.jpg) Inflorescence of woolly-white (Hymenopappus artemisiaefolius) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
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