 Prickly flowers of Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 3, 2014
 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, June 30, 2014
 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, June 22, 2012
 Hooker s eryngo (Eryngium hookeri) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
 Dry flowers of Hooker s eryngo (Eryngium hookeri) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 9, 2020
 Dried Hooker s eryngo (Eryngium hookeri) near the trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 21, 2022
 Hooker s eryngo (Eryngium hookeri) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Hooker s eryngo (Eryngium hookeri) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 14, 2020
 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 15, 2014
 Flower of Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 3, 2014
 Hooker s eryngo (Eryngium hookeri) on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 3, 2014
 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
 Yellow flowers of prickly pears (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Dodder (Cuscuta) on Hooker s eryngo (Eryngium hookeri) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Formerly flooded area overgrown by Hooker s eryngo (Eryngium hookeri) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Flowers of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Yellow flowers of Prickly pear cactus (Opuntia) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Prickly pear cacti and dry trees in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Prickly pear cacti (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 14, 2008
 Prickly peas cactus (Opuntia) with yellow Senecio(?) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Flowers of beebalm (Monarda punctata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 16, 2019
 White prickly poppy (Argemone albiflora) with katidid in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 10, 2019
 Flowers of Indian blanket (firewheel, Gaillardia pulchella) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 16, 2019
 Purple flowers of winged loosestrife (Lythrum alatum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 16, 2019
 Prickly seeds of wild carrot (Daucus pusillus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Scaly stippled lichen (Endocarpon pusillum) on a thin layer of soil over exposed limestone rocks overgrown by prickly pears near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Red phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Prickly pear pad in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Pad of prickly pears (Opuntia) with a bug in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
 Prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
 Pink flowers of phlox in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Beeblossom flowers (Gaura) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Leaves of prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Pad of prickly pears in a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
 Prickly poppy 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
 Prickly pear (Opuntia) pad in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 White prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
 Dark crust of scaly stippled lichen (Endocarpon pusillum) on a thin layer of soil over exposed limestone rocks overgrown by prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Blue flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Dry flowers of phlox in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 A field of flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 Flower of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Prickly peas (Opuntia cactus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Grasshopper on a white prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
 Flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Yellow flowers of buttercup (Ranunculus) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Flowers of Zizotes milkweed (Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Flowers of snow-on-the-prairie (Euphorbia bicolor) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Flowers of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Planted flowers of mallow family near a museum in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Flowers of Morning Glory (Ipomoea cordatotriloba) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Solanum (nightshade) flowers in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 23, 2012
 Blue Ruellia flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 12, 2020
 Solanum (nightshade) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 23, 2012
 A field of yellow flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 Dry skeleton of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
 Young katydid on white prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 3, 2008
 White prickly poppy (Argemone albiflora) with a katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Prickly poppy flower with immature katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Dry pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Dry pad skeleton of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Prickly seeds of Hedge Parsley (Torilis arvensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Pads of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Blooming prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
 Flowers of Morning glory (tievine, Ipomoea cordatotriloba) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 5, 2019
 Pink flowers of creeping beggarweed (Desmodium incanum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Resette of leaves and small white flowers of a plant in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Rosette of leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 7, 2024
 Pads of prickly pear cactus on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 Heart shaped leaf of greenbrier (prickly-ivy, smilax) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2008
 Blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Vegetative shoot of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Leaves of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Young leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Flower of prickly poppy (Argemone albiflora) with a beetle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Purplish pads of a prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Rusty pads of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
 Ovary of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Young shoot of greenbrier vine (prickly-ivy, smilax, sarsaparilla) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Basal leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
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