 Close-up of a flower of Claret cup cactus in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Spotted cucumber beetle (Diabrotica undecimpunctata) on a shoot of prickly pears cactus in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Button cactus (Epithelantha micromeris) with red fruits in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 Yellow flowers of Prickly pear cactus (Opuntia) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 Orange flowers of Prickly pear cactus (Opuntia) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 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
 Devil s shoestring (Nolina lindhemeriana) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Candelilla plant (Desert Candle, Euphorbia antisyphillitica) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Dry aster seeds in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 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
 Tulipan del monte (Hibiscus cardiophyllus) in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 Claret cup cactus (Echinocereus triglochidiatus) north from Capulin Canyon in Bandelier National Monument. New Mexico, near Los Alamos, May 24, 2008
 Common trumpet creeper (Foxglove vine, Campsis radicans) in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 Milkweed (Antelope horns, Asclepias asperula) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 Hedgehog, or claret cup cactus (Echinocereus triglochidiatus) on the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
 Thorny cluster of hedgehog, or claret cup cactus (Echinocereus triglochidiatus) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Succulent in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 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
 Red succulent flowers in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Water cistern in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Palafoxia callosa in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Palafoxia hookeriana flower in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Water-primrose (Ludwigia) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Mistflower (Eupatorium coelestinum) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Crag lily (Anthericum torreyi) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 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
 Cactus in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Lace cactus (Echinocereus reichenbachii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 27, 2009
 Blooming Lace cactus (Echinocereus reichenbachii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2009
 Echinocereus reichenbachii (lace cactus) in Bastrop State Park. Bastrop, Texas, March 17, 2018
 Claret cup cactus near Yapashi in Bandelier National Monument. New Mexico, near Los Alamos, May 25, 2008
 Echinocereus reichenbachii (lace cactus) with fire ant mounds at Lost Pines Trail in Bastrop State Park. Bastrop, Texas, March 19, 2022
 Claret cup cactus flower north from Capulin Canyon in Bandelier National Monument. New Mexico, near Los Alamos, May 26, 2008
 Lace cactus (Echinocereus reichenbachii) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Lace cactus (Echinocereus reichenbachii) near a trail in Bastrop State Park. Bastrop, Texas, April 15, 2023
 Lace cactus (Echinocereus reichenbachii) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 5, 2008
 Lace cactus (Echinocereus reichenbachii) with a mound of fire ants in Bastrop State Park. Bastrop, Texas, April 15, 2023
 Lace cactus (Echinocereus reichenbachii) at Lost Pines Loop Trail in Bastrop State Park. Bastrop, Texas, July 28, 2018
 Hedgehog cactus (Echinocereus viridiflorus) on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 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
 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
 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
 Artificial waterfall in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Waterfall in Japanese garden in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Crossvine (Bignonia capreolata) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Twin artificial waterfall in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Fern fiddlehead in prehistoric garden in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 White flower of lily family in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Blooming cherry like tree in McKinney Falls State Park. Austin, Texas, March 7, 2009
 Shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, March 22, 2009
 Blooming mountain laurel (Sophora secundiflora) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) on Homestead Trail in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Shoot of Sago palm (cikas) in prehistoric garden in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Young leaves of Sago palm (cikas) in prehistoric garden in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Flower buds on a cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, March 26, 2009
 False Day Flower (Commelinantia anomala, Tinantia anomala) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Gregg s tubetongue (Hairy Tube tongue, Justicia pilosella, Siphonoglossa pilosella) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Tender young pad or nopalitos of prickly pear cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, March 31, 2009
 Brown Anole (Anolis sagrei, Norops sagrei, Bahamian Anole) in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Tender young pad or nopalitos of prickly pear cactus with glossy wax coating and fresh areolas bearing leaf primordia, spines and tufts of glochids (barbed hairs) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, March 31, 2009
 Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
 Tender young pad or nopalitos of prickly pear cactus (opuntia) with glossy wax coating and fresh areolas bearing leaf primordia, spines and tufts of glochids (barbed hairs) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, March 31, 2009
 Spike of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
 Spikelets of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
 Close up of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016
 Ponds of Pedernales Falls. Johnson City, Texas, November 7, 2009
 Pink rose in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
 Loop 360 Pennybacker Bridge and Lake Austin at morning. Austin, Texas, July 26, 2008
 Johnson grass (Sorghum halepense) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
 Cypress pool below Pedernales Falls. Johnson City, Texas, November 7, 2009
 Cypress roots below Pedernales Falls. Johnson City, Texas, November 7, 2009
 Water stream near Pedernales Falls. Johnson City, Texas, November 7, 2009
 Cypress pool below Pedernales Falls. Johnson City, Texas, November 7, 2009
 Replica of an old barn in Zilker Botanical Gardens. Austin, Texas, November 7, 2009
 Pink water lily in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
 Orange tiger lily in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
 Seeds of Johnson grass (Sorghum halepense) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
 Statue of Bevo with sawed-off horns (t.u. mascot, Texas longhorn cow, a mascot of University of Texas at Austin) at Aggieland Outfitters on George Bush Drive near Texas A and M University. College Station, Texas, March 29, 2009
 Cypress roots between stones below Pedernales Falls. Johnson City, Texas, November 7, 2009
 Tombs of Thomas and Martha Johnson in Boonville Cemetery. Bryan, Texas, December 8, 2009
 Apical meristem of a cactus in Antique Rose Emporium. Independence, Texas, August 15, 2009
 Cholla cactus (cylindropuntia) in Antique Rose Emporium. Independence, Texas, August 15, 2009
 Cactus with water drops in Antique Rose Emporium. Independence, Texas, December 12, 2009
 Buffalo bur (Solanum rostratum) in McKinney Falls State Park near Austin. Texas, May 10, 2009
 Angel s trumpet (Brugmansia) in Zilker Botanical Gardens. Austin, Texas, November 7, 2009
 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
 Apical meristem of a potted cactus in Antique Rose Emporium. Independence, Texas, August 15, 2009
 Cypress below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
 River below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
 Flower bud of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Blue curls (Fiddleneck, Phacelia congesta) in McKinney Falls State Park near Austin. Texas, May 10, 2009
 Water speedwell (Veronica anagalis-aquatica) in McKinney Falls State Park near Austin. Texas, May 10, 2009
 Cypress needles below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
 Cypresses and rocks below Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 7, 2009
 Fruit of cholla cactus (cylindropuntia) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Snail feeding on a green pad of prickly pear cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, May 3, 2009
 Mature seed head of curly dock (Rumex) in McKinney Falls State Park near Austin. Texas, May 10, 2009
 Green false nightshade (Chamaesaracha coronopus) near a parking lot in McKinney Falls State Park near Austin. Texas, May 10, 2009
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