 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 heads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
 Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 22, 2012
 Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 13, 2022
 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
 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
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 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, June 9, 2019
 Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 4, 2010
 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
 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
 Button snakeroot (Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 10, 2012
 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 10, 2012
 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
 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
 Dense apical umbel of flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
 Button snakeroot (Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
 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
 Flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
 Flower head of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
 Delta flower scarab beetles (Trigonopeltastes delta) on button snakeroot in Lick Creek Park. College Station, Texas, July 1, 2014
 Dry seed heads of Black eyed susan (Rudbeckia hirta) in dew from Post Oak Trail in Lick Creek Park. College Station, Texas, October 30, 2012
 White mistflower (Ageratina havanensis, Havana snakeroot) with a caterpillar in Lick Creek Park. College Station, Texas, October 19, 2008
 Boneset flowers (white snakeroot, Ageratina altissima) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, October 15, 2020
 White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, October 3, 2008
 White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 16, 2024
 Seed heads of Texas dandelions in Lick Creek Park. College Station, Texas, May 3, 2012
 Canadian black snakeroot (Sanicula canadensis) in Lick Creek Park. College Station, Texas, April 22, 2021
 Leaves of Canadian black snakeroot (Sanicula canadensis) in Lick Creek Park. College Station, Texas, March 31, 2024
 Seed heads of soft golden aster (Bradburia pilosa) in Lick Creek Park. College Station, Texas, October 10, 2022
 Dry seed heads in Lick Creek Park. College Station, Texas, May 4, 2011
 Seed heads of cattails (Typha) in Lick Creek Park. College Station, Texas, July 14, 2022
 Fluffy seed heads of cattails (Typha) in Lick Creek Park. College Station, Texas, August 7, 2022
 Bur-like seed capsules with hooks of Canadian black snakeroot (Sanicula canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Seed heads of a plant with narrow leaves of aster family in Lick Creek Park. College Station, Texas, April 17, 2023
 Green seed heads of fragrant flatsedge (Cyperus odoratus) on a new cutting in Lick Creek Park. College Station, Texas, August 2, 2018
 Fluffy seed heads of soft golden aster (Bradburia pilosa) in Lick Creek Park. College Station, Texas, September 8, 2023
 Dry seed heads of spotted beebalm (Monarda punctata) on a sewage line right of way in Lick Creek Park. College Station, Texas, July 18, 2020
 Seed heads of bunchy, or many-spiked sedge (Cyperus polystachyos) on a new cutting in Lick Creek Park. College Station, Texas, August 2, 2018
 Dry seed heads of globe flat sedge (Cyperus echinatus) on Post Oak Trail in Lick Creek Park. College Station, Texas, September 8, 2023
 Seed heads of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, September 13, 2023
 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, June 22, 2012
 Tiny seed heads of umbellifer plants Tansy dogshade (Limnosciadium pinnatum, Apiaceae), collected from wet area behind sewage treatment plant in Lick Creek Park. College Station, Texas, July 29, 2023
 Close-up of tiny seed heads of umbellifer plants Tansy dogshade (Limnosciadium pinnatum, Apiaceae), collected from wet area behind sewage treatment plant in Lick Creek Park. College Station, Texas, July 29, 2023
 Seed heads of aster in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, December 11, 2012
 Thistle (Cirsium engelmannii) heads in Lick Creek Park. College Station, Texas, June 22, 2012
 Seed pods of woolly croton (hogwort, Croton capitatus) in Lick Creek Park. College Station, Texas, October 9, 2012
 Thistle flower heads (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, July 7, 2012
 Snout beetle (weevil) on seed pods of woolly croton (hogwort, Croton capitatus) in Lick Creek Park. College Station, Texas, October 9, 2012
 Flower and fluffy seed heads of firewheel (Gaillardia pulchella) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 White mistflower (Ageratina havanensis, Havana snakeroot) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 15, 2022
 Blooming white mistflower (Ageratina havanensis, Havana snakeroot) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 15, 2022
 Red-banded Hairstreak (Calycopis cecrops) butterfly on white mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, October 18, 2009
 Button of a mushroom Amanita pubescens in Lick Creek Park. College Station, Texas, October 3, 2018
 White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Little wood satyr butterfly, Hermeuptychia (Euptychia) hermes, on white mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, October 18, 2009
 Button mushrooms Agaricus sect. Xanthodermatei in Lick Creek Park. College Station, Texas, October 5, 2018
 Dry seed head of black eyed susan in Lick Creek Park. College Station, Texas, June 30, 2012
 Seed head of wild carrot (Daucus pusillus) in Lick Creek Park. College Station, Texas, May 22, 2012
 Close up of a seed head of wild carrot (Daucus pusillus) in Lick Creek Park. College Station, Texas, May 22, 2012
 Umbrella like seed head of wild carrot (Daucus pusillus) in Lick Creek Park. College Station, Texas, May 22, 2012
 Silky flower heads of fragrant cudweed (sweet everlasting, Pseudognaphalium obtusifolium) on Racoon Run Trail in Lick Creek Park. College Station, Texas, October 19, 2008
 Stink bug nymph on a seed head of soft golden aster in Lick Creek Park. College Station, Texas, October 29, 2010
 Stink bug nymph (Euschistus) on a seed head of frostweed in Lick Creek Park, on Iron Bridge Trail. College Station, Texas, October 19, 2008
 Seed puffs released from a seed pod of ten-petal anemone (windflower, Anemone heterophylla), in Mercer Arboretum and Botanical Gardens. A picture of the same sort of windflower was taken a month ago. Now elongated domes of ovaries turned into cylindrical seed heads. Humble (Houston area), Texas, March 1, 2009
 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 15, 2014
 Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, June 30, 2014
 Dry seed heads of Illinois bundleflower (Desmanthus illinoensis) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Flower of Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 3, 2014
 Leaves of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019
 Patterns of animal heads near the roof of Civil Engineering Building (1932) on campus of Texas A and M University. College Station, Texas, October 21, 2012
 Hooker s eryngo (Eryngium hookeri) on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 3, 2014
 Prickly flowers of Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 3, 2014
 Leaves of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
 Shoots of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
 Dry seed heads of artichoke thistle (Cynara cardunculus) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, July 7, 2022
 Prickly seeds with hooks of Canadian black snakeroot (Sanicula canadensis) in Antique Rose Emporium. Independence, Texas, July 2, 2022
 Spider on seed heads of elephant foot plant near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
 Button mushrooms (Agaricus) in Lick Creek Park. College Station, Texas, June 21, 2019
 Button lichen (Buellia) in Lick Creek Park. College Station, Texas, January 18, 2019
 Button of Amanita pubescens mushroom in Lick Creek Park. College Station, Texas, June 28, 2018
 Flower heads of Drummond wild onion (Allium drummondii) in Lick Creek Park. College Station, Texas, April 17, 2023
 Common button lichen (Buellia stillingiana) on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
 Immature flower heads of buttonbush (Cephalanthus occidentalis) near Nature Center in Lick Creek Park. College Station, Texas, July 11, 2020
 Reproductive heads of hemispheric liverwort (Reboulia hemisphaerica) on Post Oak Trail in Lick Creek Park. College Station, Texas, February 24, 2019
 Hemispherical reproductive heads of a liverwort Reboulia hemisphaerica on Post Oak Trail in Lick Creek Park. College Station, Texas, February 24, 2019
 Button stage (immature) mushrooms Amanita pubescens in Lick Creek Park. College Station, Texas, July 16, 2018
 Common button lichen (Buellia stillingiana) (black) in Lick Creek Park. College Station, Texas, January 18, 2019
 Common button lichen (Buellia stillingiana) on oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
|