 Stamens of white prickly poppy (Argemone albiflora) flower on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, May 30, 2010
 White prickly poppy (Argemone albiflora) flowers on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, May 30, 2010
 Mint like plant on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, May 30, 2010
 Lazy daisy (Aphanostephus skirrhobasis) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, May 30, 2010
 Carolina larkspur (Delphinium carolinianum) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, May 30, 2010
 Flower of Palafoxia hookeriana on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, August 8, 2009
 Flower of Palafoxia hookeriana on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Close-up of flower of Palafoxia hookeriana on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Opening flower of white prickly poppy (pricklepoppy, Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
 Flower of Palafoxia hookeriana (sand palafox) in dew on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Sand palafox (Palafoxia hookeriana) flower on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Morning Glory (Ipomoea cordatotriloba) flower on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Yellow flower of aster family Viguiera cordifolia(?) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Small yellow flower of aster family with downcurved rays on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 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
 Distinctive fruits of Common hoptree (Ptelea trifoliata), waferlike samara with broad wings, on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, May 30, 2010
 Winter rosette of white prickly poppy (Argemone albiflora) in Bee Creek Park. College Station, Texas, January 28, 2023
 Flower of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Branching sprays of white flowers of wild buckwheat (Yerba colorado, Eriogonum annuum(?)) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Large flower of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Delicate flower of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 White prickly poppy (Argemone albiflora) in Birch Creek Unit of Lake Somerville State Park, Texas, April 29, 2012
 Flower of prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
 White prickly poppy (Argemone albiflora) on a road on north shore of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, May 6, 2018
 Honey bee hovering over a flower of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Side view of flower of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 White prickly poppy (Argemone albiflora) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Flower of white prickly poppy (Argemone albiflora) with a green metallic beetle at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Close up of a flower of prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
 Sunflower on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, August 8, 2009
 Sunflower on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Flower of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 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, April 24, 2022
 White prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 White prickly poppy (Argemone albiflora) with a katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Leaves of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 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 24, 2022
 White prickly poppy (Argemone albiflora) with katidid in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 10, 2019
 Flowers of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Seedling of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
 Flower of prickly poppy (Argemone albiflora) with a beetle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Snake cotton (Froelichia) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, October 1, 2011
 Mirabilis (Four-O clock family) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, October 1, 2011
 Snake cotton (Froelichia) taken from roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, August 8, 2009
 Close-up of Palafoxia hookeriana on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Winter rosette of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
 Winter rosette of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Upper view of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Late blooming white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
 Rosette of leaves of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
 Buffalo bur (Solanum rostratum) on roadside of Road 364, north from Sugarloaf Mountain. Gause, Texas, August 8, 2009
 Sandburs spikelet (Cenchrus spinifex) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 Flowers of Mirabilis (Four-O clock family) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, October 1, 2011
 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
 Winter rosette of white prickly poppy (Argemone albiflora) with water drops in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Slender bush clover (Lespedeza virginica) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 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
 Flowers with papery sheath of Parks jointweed (Polygonella parksii) on roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, September 20, 2008
 White prickly poppy (Argemone albiflora) on north shore of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, May 6, 2018
 White prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 16, 2020
 White prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 14, 2024
 Flower of prickly poppy (Argemone albiflora) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 26, 2020
 Blooming white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Leaves of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Winter rosette of white prickly poppy (Argemone albiflora) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 6, 2024
 Cottony 5-lobed tubular flowers in a dense spike-like cluster of Snake cotton (Froelichia) taken from roadside of Road 364, near Sugarloaf Mountain. Gause, Texas, August 8, 2009
 Snake cotton (Froelichia) on roadside of Road 364, near Sugarloaf Mountain, with cottony 5-lobed tubular flowers in a dense spike-like cluster. Gause, Texas, September 20, 2008
 Sugarloaf Mountain. Gause, Texas, March 21, 2010.
 Leaves of white prickly poppy (Argemone albiflora) on Lake Somerville Trailway in area of Newman Bottom near Nails Creek Unit of Somerville Lake State Park. Texas, February 2, 2021
 Katydid nymph on prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
 Katydid nymph on a petal of prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
 Prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Rosette of leaves of white prickly poppy (Argemone albiflora) on sand mound of harvester ants on Lake Somerville Trailway in area of Newman Bottom near Nails Creek Unit of Somerville Lake State Park. Texas, February 2, 2021
 Winter rosette of leaves of white prickly poppy (Argemone albiflora) on sand mound of harvester ants on Lake Somerville Trailway in area of Newman Bottom near Nails Creek Unit of Somerville Lake State Park. Texas, February 2, 2021
 Rosette of leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 7, 2024
 Basal leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Young leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Top of Sugarloaf Mountain, with view Road 364 to the north. Gause, Texas, May 17, 2009
 Sugarloaf Mountain, view from Road 364. Gause, Texas, September 20, 2008
 Small rosette of leaves of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Leaves with water drops of prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Prickly poppy (Argemone albiflora) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 26, 2020
 Late blooming prickly poppy (Argemone albiflora) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, October 31, 2020
 Bails of cotton near CR 264, with Sugarloaf Mountain on horizon. Gause, Texas, September 22, 2012
 View of Little River from old railroad bridge at CR 264 near Sugarloaf Mountain. Gause, Texas, September 22, 2012
 Flower of Unicorn plant (devil s claw, Proboscidea loisianica) on roadside of Road 364, north from Little River. Gause, Texas, May 30, 2010
 Stamens of a flower of white prickly poppy in Birch Creek Unit of Lake Somerville State Park, Texas, April 29, 2012
 Central part of a flower of white prickly poppy in Birch Creek Unit of Lake Somerville State Park, Texas, April 29, 2012
 White flower of prickly poppy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Grasshopper on a white prickly poppy flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
 White flowers of wild buckwheat (Yerba colorado, Eriogonum) on roadside of Road 364. Gause, Texas, October 1, 2011
 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
 Branching sprays of white flowers of wild buckwheat (Yerba colorado, Eriogonum) on roadside of Road 364. Gause, Texas, October 1, 2011
 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
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