 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 7, 2010
 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 27, 2013
 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 10, 2019
 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Caltrop flower (puncturevine, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Flower of puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2010
 Puncturevine (Caltrop, Tribulus terrestris) with a yellow flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Flower of puncturevine (Caltrop, Tribulus terrestris, Tribulus lanuginosus, local name hasak) in sand near a road to Saudi Arabia in southern Qatar, February 11, 2014
 Puncturevine (Caltrop, Tribulus terrestris) on roadside of Salwa Road, south-west from Doha. Qatar, April 23, 2014
 Blooming puncturevine (Caltrop, Tribulus terrestris, Tribulus lanuginosus, local name hasak) on a roadside in southern Qatar, February 11, 2014
 Puncturevine (Caltrop, Tribulus terrestris, Tribulus lanuginosus, local name hasak) in sand on roadside in southern Qatar, February 11, 2014
 Flower of puncturevine (Caltrop, Tribulus terrestris, Tribulus lanuginosus, local name hasak) on a roadside in southern Qatar, February 11, 2014
 Yellow flowers of puncturevine (Caltrop, Tribulus terrestris, Tribulus lanuginosus, local name hasak) on a roadside in southern Qatar, February 11, 2014
 Small matweed (Guilleminea densa, Amaranthaceae) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Blooming small matweed (Guilleminea densa, Amaranthaceae) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Puncturevine (caltrop, Tribulus terrestris) on a sidewalk of Al Diwan Street. Doha, Qatar, March 28, 2014
 Ferry Road with yellow flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Big rat snake on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Small matweed (Guilleminea densa) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Crab spider on a thistle Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Prostrate spurge (Euphorbia) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 12, 2020
 Khakiweed (Alternanthera caracasana) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 12, 2020
 Small blue dayflower (Commelina) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 16, 2019
 Small matweed (Guilleminea densa, Amaranthaceae) on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Puncturevine (Caltrop, Tribulus terrestris) in a silty depression on roadside of a road to Zubara, area of Al Magdah farms. Northern Qatar, October 24, 2015
 Puncturevine (Caltrop, Tribulus terrestris) on a path in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Fruit of Puncturevine (Caltrop, Tribulus terrestris) on a path in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Close up of Puncturevine (Caltrop, Tribulus terrestris) on a path in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Mushrooms Clitocella fallax (Rhodocybe fallax)(?) in grass at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 6, 2021
 Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 28, 2010
 Ferry Road in fog in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 8, 2012
 Ferry Road in fog in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 20, 2013
 Old Ferry Road in mist in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Slope of Ferry Road in fog in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 20, 2013
 Mushrooms Clitocella fallax (Rhodocybe fallax)(?) on roadside of Ferry Road in area of prairie in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 6, 2021
 Field of wildflowers near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Puncturevine (Caltrop, Tribulus terrestris, local name hasak) taken from Al Luqta area. Doha, Qatar, March 13, 2015
 Catkins and young leaves of oak near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Grasshopper on a stalk of grass near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2009
 Small yellow flower of puncturevine (Caltrop, Tribulus terrestris) in Old Baylor Park. Independence, Texas, September 6, 2009
 Dried fallen leaves of magnolia near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
 Fourleaf allseed (Polycarpon tetraphyllum) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Some rosette of basal leaves on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Some winter rosette of leaves on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Common sandbur (Cenchrus spinifex) near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Green nuts on a pecan tree near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Dried leaves of black cherry on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
 Hairy leaves of plantain(?) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Small matweed (Guilleminea densa) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 9, 2023
 Winter rosette of plantain(?) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Mat of some plant with tiny leaves on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Small matweed (Guilleminea densa, Amaranthaceae) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
 Green grasshopper on Amaranthus albus(?) near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Mat of some plant with small hairy leaves on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Fourleaf allseed (Polycarpon tetraphyllum) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Small matweed (Guilleminea densa) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 9, 2023
 Emerging green fruits on a pecan tree near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Spotted beebalm (Monarda punctata) near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Red wisker clammyweed (Polanisia dodecandra) near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Some small rosette of basal leaves on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Blue flowers of spiderwort (Tradescantia) on a lawn near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
 Winter rosette of smooth cat s-ear (Hypochaeris glabra)(?) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Black velvet leatherleaf slug Belocaulus angustipes on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 2, 2020
 Spring pinkgill mushrooms (Entoloma vernum ) on a lawn near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
 Shoot of Chinese jujube (Ziziphus jujuba) on a lawn at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Purplish winter rosette of plantain (Plantago) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Elegant stinkhorn mushroom (Mutinus elegans) on a lawn near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
 Winter rosette of smooth cat s-ear (Hypochaeris glabra)(?) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Star eathball mushrooms (Scleroderma polyrhizum) on a lawn near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
 Globular seed pod of a plant of sunflower family near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Seedling of crane s bill (Geranium carolinianum) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Big sheath mushrooms (Volvopluteus gloiocephalus) in grassy area near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2020
 Green lynx spider eating a hornet wasp on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2009
 Dune stinkhorn mushrooms (Phallus hadriani) on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 Seed head of a plant of sunflower family near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Big sheath mushrooms (Volvopluteus gloiocephalus) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Green carpetweed (Indian Chickweed, Mollugo verticillata) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 24, 2021
 Stemless evening primrose (Oenothera triloba) with other plant on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Cap of a brittlestem mushroom (Psathyrella)(?) from lawn, near Ferry Road (spore print black) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
 Globular seed head of a plant of sunflower family near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Star eathball mushrooms (Scleroderma polyrhizum) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Dissected big sheath mushrooms (Volvopluteus gloiocephalus) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Hygroscopic earthstar mushrooms (Astraeus hygrometricus) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Tan stripe under black velvet leatherleaf slug Belocaulus angustipes on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 2, 2020
 Pinkish winter rosette of smooth cat s-ear (Hypochaeris glabra)(?) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Winter rosette of crane s bill (Geranium carolinianum) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Prairie sunflower (Helianthus petiolaris)(?) on a sand pile at the beginning of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Close up of a cap of dune stinkhorn mushroom (Phallus hadriani) on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 Close up of a dune stinkhorn mushroom (Phallus hadriani) on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
 Green fruits of Chinese jujube (Ziziphus jujuba) near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
 Green carpetweed (Indian Chickweed, Mollugo verticillata) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Glossy leaves of Chinese jujube (Ziziphus jujuba) on a lawn on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
 Winter rosette of stemless evening primrose (Oenothera triloba) on gravel of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Winter rosette of stemless evening primrose (Oenothera triloba) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Small bush of Chinese jujube (Ziziphus jujuba) with glossy leaves on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Sand stinkhorn mushroom (Phallus hadriani) on a grassy lawn on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Dune stinkhorn mushroom (Phallus hadriani) on a grassy lawn on Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
 Dissected star eathball mushrooms (Scleroderma polyrhizum) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
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