 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 15, 2014
 Prickly flowers 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
 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
 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
 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
 Hooker s eryngo (Eryngium hookeri) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 14, 2020
 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
 Prickly flowers of Hooker s eryngo (Eryngium hookeri) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 16, 2019
 Flower heads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
 Yellow flower of Hooker s evening primrose (Oenothera hookeri) at sunrise in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 29, 2008
 Flower heads of blue eryngo (Eryngium planum) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 29, 2016
 Large yellow flower on a stout erect stem of Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 26, 2008
 Large yellow flower of Hooker s evening primrose (Oenothera hookeri) and thick cylindrical ovaries behind it in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 21, 2008
 Button snakeroot (Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flowers of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
 Close up of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
 Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 11, 2008
 Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 3, 2009
 Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 8, 2009
 Close-up of yellow flowers of Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 5, 2008
 Large yellow flowers of Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 26, 2008
 Blue eryngo (Eryngium planum) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 18, 2016
 Blue eryngo (Eryngium planum) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 28, 2017
 Flower head of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
 Button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 24, 2013
 Flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
 Blue eryngo (Eryngium planum) in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, July 24, 2024
 Passion flower (Passiflora) in Lick Creek Park. College Station, Texas, July 10, 2014
 Flower bud of summer thistle in Lick Creek Park. College Station, Texas, July 22, 2014
 Flower of summer thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Flower of summer thistle in Lick Creek Park. College Station, Texas, July 22, 2014
 Flower of Partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 15, 2014
 Flower of nits-and-lice (Hypericum drummondii) in Lick Creek Park. College Station, Texas, July 22, 2014
 Flower of Pigeon wings (Clitoria mariana) in Lick Creek Park. College Station, Texas, July 10, 2014
 Flower of Nits-and-lice (Hypericum drummondii) in Lick Creek Park. College Station, Texas, July 26, 2014
 Green passion flower (Passiflora lutea) in Lick Creek Park. College Station, Texas, July 22, 2014
 Spiny button-like flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek park, on Deer Run Trail. College Station, June 15, 2008
 Flower of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flower of Maryland meadow-beauty (Rhexia mariana) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flower buds of green milkweed (Asclepias obovata(?)) taken from Lick Creek Park. College Station, Texas, July 29, 2014
 St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, July 26, 2014
 Flower bud of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 10, 2014
 Summer-blooming thistle flower (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 10, 2014
 Flower bud of summer-blooming thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flowers of creeping Eryngo (Eryngium prostratum) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, June 19, 2019
 Yellow flower of evening primrose (Oenothera hookeri) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, July 7, 2022
 Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) near Deer Run Trail in Lick Creek Park. College Station, Texas, July 4, 2013
 Blue eryngo (Eryngium planum in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, August 22, 2013
 Button snakeroot (Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 10, 2012
 Delta flower scarab beetle (Trigonopeltastes delta) in Lick Creek Park. College Station, Texas, July 10, 2014
 Creeping Eryngo (Eryngium prostratum) near a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, June 19, 2019
 Flower of Southern wild senna (Senna marilandica, Cassia) in Lick Creek Park. College Station, Texas, July 26, 2014
 Delta flower scarab beetles (Trigonopeltastes delta) on button snakeroot in Lick Creek Park. College Station, Texas, July 1, 2014
 Button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
 Blooming button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Umbels of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 20, 2012
 Flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
 Spiny head of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 20, 2012
 Spiny flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Umbels of flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Coreopsis flower in Lick Creek Park. College Station, Texas, May 20, 2014
 Dense apical umbel of flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 4, 2010
 Meadow pink flower in Lick Creek Park. College Station, Texas, May 20, 2014
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) with a butterfly in dew in Lick Creek Park. College Station, Texas, June 1, 2010
 Spiny flowerhead of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, June 15, 2008
 Spiny flowerhead of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
 Dry seed heads of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Passion flower (passiflora) in Lick Creek Park. College Station, Texas, August 3, 2014
 Coreopsis flower on Post Oak Trail in Lick Creek Park. College Station, Texas, May 20, 2014
 Thistle flower in Lick Creek Park. College Station, Texas, July 17, 2009
 Ripe fruit of passion flower (Passiflora) with seeds taken from Lick Creek Park. College Station, Texas, August 9, 2014
 Flower of smallhead doll s daisy (Boltonia diffusa) in Lick Creek Park. College Station, Texas, August 3, 2014
 Opening thistle flower in Lick Creek Park. College Station, Texas, July 17, 2009
 Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 22, 2012
 Close up of a flower of Wild Potato Vine (Ipomoea pandurata) in Lick Creek Park. College Station, Texas, August 9, 2014
 Seeds inside opened fruit of passion flower (Passiflora) taken from Lick Creek Park. College Station, Texas, August 9, 2014
 Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 13, 2022
 Red flower of Turkey s cap (Malvaviscus drummondii) in Lick Creek Park. College Station, Texas, July 28, 2021
 Flower of butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, July 21, 2019
 Bud of thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) near Deer Run Trail in Lick Creek Park. College Station, Texas, June 8, 2008
 Close up of a flower of Potato-weed (solanum) in Lick Creek Park. College Station, Texas, July 7, 2012
 Close-up of a flower of partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, July 28, 2021
 Thistle flower heads (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 7, 2012
 Asymmetric flower of partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, July 21, 2019
 Yellow flower of Partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, July 28, 2021
 Asymmetric flower of Partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, July 24, 2013
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