 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
 Flower of 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
 Blooming 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
 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 a sidewalk of Al Diwan Street. Doha, Qatar, March 28, 2014
 Puncturevine (Caltrop, Tribulus terrestris) on roadside of Salwa Road, south-west from Doha. Qatar, April 23, 2014
 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, August 7, 2010
 Puncturevine (Caltrop, Tribulus terrestris) on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Flower of puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2010
 Puncturevine (Caltrop, Tribulus terrestris, local name hasak) taken from Al Luqta area. Doha, Qatar, March 13, 2015
 Small yellow flower of puncturevine (Caltrop, Tribulus terrestris) in Old Baylor Park. Independence, Texas, September 6, 2009
 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) 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, July 1, 2012
 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Caltrop flower (puncturevine, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Puncturevine (Caltrop, Tribulus terrestris) with a yellow flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Close up of Turk s cap (Malvaviscus drummondii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Close up of a flower of bottle gourd (calabash, Lagenaria siceraria) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Close up of rosettes of bluebonnet leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Close up of back lit red hibiscus flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2009
 Seeds of some grass in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Turk s cap (Malvaviscus drummondii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Turk s cap (Malvaviscus drummondii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Spurge (Euphorbia indica(?)) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Pink species of Ruellia(?) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Rainlily (Cooperia drummondi) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Overgrown path in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 24, 2013
 Overgrown path in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 24, 2018
 Caesalpinia pulcherrima (red bird of paradise) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Flower of Turk s cap (Malvaviscus drummondii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Yellow flower of evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Bush Morning Glory (Ipomoea carnea) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Coastal globe amaranth (Gomphrena serrata) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Bottle gourd (calabash, Lagenaria siceraria) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Bubba desert willow (Chilopsis linearis) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Showy evening primrose (Oenothera speciosa) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Coastal globe amaranth (Gomphrena serrata) on a lawn in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Shoot of bush morning glory (Ipomoea carnea)(?) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Flower of Bush Morning Glory (Ipomoea carnea) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Flower of bottle gourd (calabash, Lagenaria siceraria) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Overgrown path in Trial Beds area in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 13, 2019
 Firecracker Shrub (Mexican Firebush, Hamelia patens) on a parking lot in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Flower buds of bottle gourd (calabash, Lagenaria siceraria) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Blooming Bush Morning Glory (Ipomoea carnea, pink form) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Flower of Bush Morning Glory (Ipomoea carnea, pink form) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Flowers of Bush Morning Glory (Ipomoea carnea, pink form) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Bleeding heart Vine, glory bower (Clerodendrum thomsoniae) on a parking lot in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 5, 2014
 Loufa gourd (Loofah Sponge Gourd, luffa) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Close-up of bougainvillea in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 28, 2008
 Close up of a flower of lantana in dew in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 19, 2009
 Close-up of red passiflora in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, June 7, 2008
 Close up of sunflower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 10, 2012
 Close up of red hibiscus flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2009
 Close-up of ice crystals on a cabbage leaf in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 29, 2009
 Close-up of red passion flower (passiflora) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 17, 2008
 Close up of a flower of Southern cassia in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 30, 2009
 Close up of yellow violet flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 12, 2009
 Close up of berries of possum haw holly in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 30, 2009
 Gate of Hensel Gardens in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 3, 2022
 Close up of male flowers of sotol (Dasylirion) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, June 17, 2010
 Close-up of berries of yaupon holly (Ilex vomitoria) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, November 21, 2008
 Close up of gulf fritillary caterpillar on passion flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 30, 2009
 Close-up of staminate flower of Chinese Pistache (Pistacia chinensis) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 10, 2009
 Close up of a tender young pad of prickly pear cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2018
 Lantana flowers in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Various leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Globe amaranth in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 20, 2014
 Spurge (Euphorbia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 20, 2014
 Sow thistle in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Blooming okra in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 20, 2014
 Pile of leaves in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Fruit of calla in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Some plants in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Euphorbia(?) in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Iron sculpture in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 6, 2014
 Dry leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Close up of Corkscrew flower (Vigna caracalla, Phaseolus, Snail vine) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, November 24, 2010
 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
 Leaf of sow thistle in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Rosette of leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Pile of dry leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Agave leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Small leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Dry fallen leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Sow thistle (Sonchus) in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Rosettes of leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Pink rain lilies in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Pile of leaves in freeze in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 3, 2014
 Pistil of hibiscus flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Close up of apothecia of golden eye lichen (Teloschistes chrysophthalmus) on a huisache(?) tree in abandoned TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, February 22, 2019
 Rain lily (Cooperia drummondii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Caesalpinia pulcherrima (red bird of paradise) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
|