![](../../pictures/archives/compress/2009/717/jpeg/15t.jpg) Close-up of a flower of Claret cup cactus in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/717/jpeg/12t.jpg) Claret cup cactus (Echinocereus triglochidiatus) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/746/jpeg/26t.jpg) Yellow flowers of Prickly pear cactus (Opuntia) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/747/jpeg/01t.jpg) Orange flowers of Prickly pear cactus (Opuntia) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/717/jpeg/14t.jpg) Spotted cucumber beetle (Diabrotica undecimpunctata) on a shoot of prickly pears cactus in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/746/jpeg/23t.jpg) Yellow and orange flowers of Engelmann prickly pear cactus (Opuntia phaeacantha var. discata) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/746/jpeg/19t.jpg) Dry aster seeds in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/747/jpeg/02t.jpg) Redeye prickly pear cactus (Engelmann prickly pear, Opuntia phaeacantha var. discata) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/746/jpeg/21t.jpg) Tulipan del monte (Hibiscus cardiophyllus) in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/717/jpeg/13t.jpg) Devil s shoestring (Nolina lindhemeriana) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/717/jpeg/16t.jpg) Candelilla plant (Desert Candle, Euphorbia antisyphillitica) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/746/jpeg/22t.jpg) Common trumpet creeper (Foxglove vine, Campsis radicans) in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/746/jpeg/24t.jpg) Milkweed (Antelope horns, Asclepias asperula) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2008/661/jpeg/15t.jpg) Succulent in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2009/746/jpeg/25t.jpg) Reakirt s Blue (Echinargus isola) butterfly on Antelope horns milkweed (Asclepias asperula) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2008/661/jpeg/16t.jpg) Red succulent flowers in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/661/jpeg/14t.jpg) Water cistern in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/661/jpeg/18t.jpg) Palafoxia callosa in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/661/jpeg/21t.jpg) Water-primrose (Ludwigia) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/661/jpeg/19t.jpg) Palafoxia hookeriana flower in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/661/jpeg/17t.jpg) Mistflower (Eupatorium coelestinum) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/661/jpeg/20t.jpg) Crag lily (Anthericum torreyi) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2009/747/jpeg/03t.jpg) Netted milkvine (Matelea reticulata) flower, with flat starlike green petal lobes with netlike markings and the shiny pearly white central dome, on Woodland Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/717/jpeg/01t.jpg) Cactus in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2015/1560/jpeg/18t.jpg) Fruits of sand button (creeping thorn rose, Neurada procumbens, local name saadan) taken from desert on the border of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, March 14, 2015
![](../../pictures/archives/compress/2015/1560/jpeg/21t.jpg) Fruits and a flower of sand button (creeping thorn rose, Neurada procumbens, local name saadan) taken from desert on the border of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, March 14, 2015
![](../../pictures/archives/compress/2013/1283/jpeg/28t.jpg) Fruits of Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, October 1, 2013
![](../../pictures/archives/compress/2013/1283/jpeg/21t.jpg) Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with fruits on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, October 1, 2013
![](../../pictures/archives/compress/2013/1234/jpeg/22t.jpg) Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with fruits on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, August 1, 2013
![](../../pictures/archives/compress/2022/3132/jpeg/04t.jpg) Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with red fruits on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 17, 2022
![](../../pictures/archives/compress/2013/1290/jpeg/03t.jpg) Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with red fruits on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, October 20, 2013
![](../../pictures/archives/compress/2013/1283/jpeg/29t.jpg) Close up of Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with fruits on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, October 1, 2013
![](../../pictures/archives/compress/2022/3132/jpeg/05t.jpg) Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with red fruits and flower buds on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 17, 2022
![](../../pictures/archives/compress/2019/2429/jpeg/26t.jpg) Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/05t.jpg) Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/04t.jpg) Button lichen (Buellia) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/28t.jpg) Button lichen (Buellia) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/06t.jpg) Patches of button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/03t.jpg) Button lichen (Buellia) on limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2014/1506/jpeg/12t.jpg) Button like fruits of Bienertia cycloptera on a beach in Abu Samra, near the border. Southern Qatar, November 29, 2014
![](../../pictures/archives/compress/2014/1506/jpeg/16t.jpg) Button like fruits of Bienertia cycloptera on a beach in Abu Samra, near the border. Southern Qatar, November 29, 2014
![](../../pictures/archives/compress/2008/681/jpeg/12t.jpg) Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) on Homestead Trail in McKinney Falls State Park. Austin, Texas, October 26, 2008
![](../../pictures/archives/compress/2014/1492/jpeg/30t.jpg) Button like fruits of Bienertia sinuspersici on a beach near Zubara archeological site. Northern Qatar, October 24, 2014
![](../../pictures/archives/compress/2021/2883/jpeg/08t.jpg) Dwarf rosette lichen Physcia neogaea on a dry pad of prickly pear cactus (Opuntia) in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
![](../../pictures/archives/compress/2021/2883/jpeg/09t.jpg) Dwarf rosette lichen Physcia neogaea on a dry pad of prickly pear cactus in prairie in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
![](../../pictures/archives/compress/2021/2883/jpeg/10t.jpg) Slender orange-bush lichen (Teloschistes exilis) together with Parmotrema and Physcia on an old pad of prickly pear cactus in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
![](../../pictures/archives/compress/2002/291/jpeg/37t.jpg) Cactus with edible fruits at Ben Gurion Boulevard. Beer-Sheva, the Middle East, August 24, 2002
![](../../pictures/archives/compress/2014/1470/jpeg/04t.jpg) Fruits of Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
![](../../pictures/archives/compress/2008/651/jpeg/03t.jpg) Nipple cactus (Coryphantha) with fruits in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, June 12, 2008
![](../../pictures/archives/compress/2014/1470/jpeg/05t.jpg) Flower and fruits of Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
![](../../pictures/archives/compress/2012/1061/jpeg/21t.jpg) Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 22, 2012
![](../../pictures/archives/compress/2022/3176/jpeg/18t.jpg) Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 13, 2022
![](../../pictures/archives/compress/2008/684/jpeg/23t.jpg) Fruits of Ricinus communis (Castorbean, Castor Oil plant, Palma Christi, Ricin, Wonder tree, Krapata) near Beach Area of Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
![](../../pictures/archives/compress/2016/1765/jpeg/16t.jpg) Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
![](../../pictures/archives/compress/2015/1560/jpeg/17t.jpg) Sand button (creeping thorn rose, Neurada procumbens, local name saadan) taken from periphery of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, March 14, 2015
![](../../pictures/archives/compress/2013/1227/jpeg/01t.jpg) 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
![](../../pictures/archives/compress/2008/650/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2016/1765/jpeg/19t.jpg) Spikelets of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
![](../../pictures/archives/compress/2016/1765/jpeg/18t.jpg) Close up of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
![](../../pictures/archives/compress/2016/1765/jpeg/17t.jpg) Spike of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
![](../../pictures/archives/compress/2009/804/jpeg/11t.jpg) Ponds of Pedernales Falls. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/746/jpeg/16t.jpg) Pink rose in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2008/652/jpeg/11t.jpg) 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
![](../../pictures/archives/compress/2008/660/jpeg/15t.jpg) Loop 360 Pennybacker Bridge and Lake Austin at morning. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2015/1560/jpeg/19t.jpg) Shoot of sand button (creeping thorn rose, Neurada procumbens, local name saadan) taken from desert on the border of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, March 14, 2015
![](../../pictures/archives/compress/2014/1502/jpeg/12t.jpg) Johnson grass (Sorghum halepense) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
![](../../pictures/archives/compress/2009/804/jpeg/16t.jpg) Cypress pool below Pedernales Falls. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/12t.jpg) Water stream near Pedernales Falls. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/14t.jpg) Cypress roots below Pedernales Falls. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/13t.jpg) Cypress pool below Pedernales Falls. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/746/jpeg/17t.jpg) Orange tiger lily in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/717/jpeg/04t.jpg) Artificial waterfall in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/746/jpeg/11t.jpg) Pink water lily in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
![](../../pictures/archives/compress/2009/804/jpeg/06t.jpg) Replica of an old barn in Zilker Botanical Gardens. Austin, Texas, November 7, 2009
![](../../pictures/archives/compress/2014/1502/jpeg/13t.jpg) Seeds of Johnson grass (Sorghum halepense) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
![](../../pictures/archives/compress/2009/813/jpeg/08t.jpg) Tombs of Thomas and Martha Johnson in Boonville Cemetery. Bryan, Texas, December 8, 2009
![](../../pictures/archives/compress/2009/804/jpeg/15t.jpg) Cypress roots between stones below Pedernales Falls. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/814/jpeg/22t.jpg) Cactus with water drops in Antique Rose Emporium. Independence, Texas, December 12, 2009
![](../../pictures/archives/compress/2009/786/jpeg/23t.jpg) Cholla cactus (cylindropuntia) in Antique Rose Emporium. Independence, Texas, August 15, 2009
![](../../pictures/archives/compress/2009/786/jpeg/19t.jpg) Apical meristem of a cactus in Antique Rose Emporium. Independence, Texas, August 15, 2009
![](../../pictures/archives/compress/2009/717/jpeg/09t.jpg) Crossvine (Bignonia capreolata) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/717/jpeg/05t.jpg) Twin artificial waterfall in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/07t.jpg) Angel s trumpet (Brugmansia) in Zilker Botanical Gardens. Austin, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/717/jpeg/08t.jpg) Waterfall in Japanese garden in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/747/jpeg/10t.jpg) Buffalo bur (Solanum rostratum) in McKinney Falls State Park near Austin. Texas, May 10, 2009
![](../../pictures/archives/compress/2014/1502/jpeg/21t.jpg) Close up of seeds of Johnson grass (Sorghum halepense) taken from Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
![](../../pictures/archives/compress/2009/786/jpeg/20t.jpg) Apical meristem of a potted cactus in Antique Rose Emporium. Independence, Texas, August 15, 2009
![](../../pictures/archives/compress/2009/717/jpeg/03t.jpg) Fern fiddlehead in prehistoric garden in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/717/jpeg/17t.jpg) Blooming cherry like tree in McKinney Falls State Park. Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/717/jpeg/10t.jpg) White flower of lily family in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/17t.jpg) River below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/18t.jpg) Cypress below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/736/jpeg/16t.jpg) Flower bud of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
![](../../pictures/archives/compress/2009/725/jpeg/19t.jpg) Shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, March 22, 2009
![](../../pictures/archives/compress/2009/747/jpeg/07t.jpg) Water speedwell (Veronica anagalis-aquatica) in McKinney Falls State Park near Austin. Texas, May 10, 2009
![](../../pictures/archives/compress/2009/717/jpeg/02t.jpg) Blooming mountain laurel (Sophora secundiflora) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
![](../../pictures/archives/compress/2009/747/jpeg/06t.jpg) Blue curls (Fiddleneck, Phacelia congesta) in McKinney Falls State Park near Austin. Texas, May 10, 2009
![](../../pictures/archives/compress/2009/804/jpeg/20t.jpg) Cypress needles below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
![](../../pictures/archives/compress/2009/804/jpeg/19t.jpg) Cypresses and rocks below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
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