 Orange flowers of Prickly pear cactus (Opuntia) on Savanna Meadow Trail 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
 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
 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
 Claret cup cactus (Echinocereus triglochidiatus) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Close-up of a flower of Claret cup 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
 Spotted cucumber beetle (Diabrotica undecimpunctata) on yellow bracted strawflower in TAMU Holistic Garden in Texas A and M University. College Station, Texas, April 18, 2009
 Spotted cucumber beetle (Diabrotica undecimpunctata) on a yellow flower of aster family in Lick Creek Park. College Station, Texas, October 19, 2008
 Spotted cucumber beetle (Diabrotica undecimpunctata) on masses of flowers of yankeeweed (Eupatorium compositifolium) in Lick Creek Park. College Station, Texas, October 29, 2010
 Devil s shoestring (Nolina lindhemeriana) in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Twelve-spotted cucumber beetle (Diabrotica undecimpunctata) on zinnia flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 12, 2008
 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
 Tulipan del monte (Hibiscus cardiophyllus) in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 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
 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
 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
 Palafoxia hookeriana flower in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Spotted cucumber beetles (Diabrotica undecimpunctata) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, November 7, 2010
 Crag lily (Anthericum torreyi) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Spotted cucumber beetles (Diabrotica undecimpunctata) on Mexican Sunflower in TAMU Holistic Garden in Texas A and M University. College Station, Texas, November 14, 2010
 Shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, March 22, 2009
 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
 Vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) with fleshy, green, leaf-like phylloclades in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Flower bud of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Banded cucumber beetle (Diabrotica balteata) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 16, 2010
 Snail feeding on a fresh young pad of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Prickly pears cactus near Fishing Beach. Sandy Hook, New Jersey, March 11, 2007
 Prickly pears cactus (zoomed) near Fishing Beach. Sandy Hook, New Jersey, March 11, 2007
 New growth of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 1, 2009
 Dried sap of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 8, 2009
 Blooming Prickly pears (Opuntia) cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2009
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Dry pad skeleton of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 New growth shoot (apical meristem) of Opuntia cactus (pricly pears) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 17, 2009
 Prickly pears (sabra) cactus on the roadside in Nizzanim. The Middle East, July 19, 2001
 Prickly pears cactus in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 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
 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
 Prickly pears cactus on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
 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
 Prickly pears cactus (known as sabra in Israel) in downtown Beer-Sheva, at intersection of Rager and Tuvyahu Street. The Middle East, February 18, 2000
 Sprout of prickly pears cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 6, 2008
 Cactus in Zilker Botanical Gardens, Austin, Texas, March 7, 2009
 Blooming prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
 Purple spineless prickly pears cactus in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Emerging sprout (new pad) of prickly pears cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 6, 2008
 Magenta tinged prickly pears cactus on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 El Capitan Mountain with prickly pears cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
 Prickly pears cactus on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 Rapidly growing vegetative shoot of prickly pear cactus (opuntia) with glossy wax coating and fresh areolas bearing leaf primordia, spines and tufts of glochids in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 1, 2009
 Rapidly growing vegetative shoot 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, April 1, 2009
 Prickly shoot of dewberry (Rubus) in Lick Creek Park. College Station, Texas, March 29, 2009
 Shoot of Sago palm (cikas) in prehistoric garden 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
 Vegetative shoot of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Young pad of prickly pears (Opuntia) in Antique Rose Emporium. Independence, Texas, March 31, 2020
 Fruits of prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 29, 2009
 Green six-spotted tiger beetle (Cicindela sexguttata) on a muddy trail in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, May 2, 2009
 Snail feeding on a green pad of prickly pear cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, May 3, 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
 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
 Cactus coreid bug Chelinidea vittiger on a pad of prickly pear cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 12, 2008
 Cactus coreid bug Chelinidea vittiger nymph on a pad of prickly pear cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 29, 2008
 Nymphs of cactus bug Chelinidea vittiger feeding on prickly pear cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2021
 Prickly pear cactus (Opuntia) in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 21, 2016
 Nymphs of cactus bug Chelinidea vittiger feeding on prickly pear cactus (discolored areas of opuntia is the result of punctures) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, May 11, 2008
 Blooming prickly pears (Opuntia) in Lick Creek Park. College Station, Texas, May 4, 2023
 Prickly pears near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
 Young shoot of greenbrier vine (prickly-ivy, smilax, sarsaparilla) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Cucumber beetle on a corn flower (Centaurea) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, May 9, 2010
 Prickly pears and yucca near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
 Young pads of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Close-up of young pad of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Top view of young pad of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Shoot of Horsetail (Scouring-bush, Equisetum hyemale), with fused minute leaves forming sheaths at regular intervals along the stem, in Zilker Botanical Gardens. Austin, Texas, May 10, 2009
 Pads of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Prickly pear cactus on a mural "500 Anos de Resistencia" by Salvadoran artist Isaias Mata (1992) on 24th Street in Mission District of San Francisco. California, March 16, 2024
 Prickly peas cactus (Opuntia) with yellow Senecio(?) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Yellow flowers of prickly pears (Opuntia) in Birch Creek Unit of Lake Somerville State Park, Texas, April 29, 2012
 Pad of prickly pears (Opuntia) with a bug in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
 Prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
 Pad of prickly pears in a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 3, 2022
 Prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 21, 2020
 Yellow flowers of prickly pears (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Fruits of prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 10, 2012
 Pad of pricly pears (opuntia) cactus with snow in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, December 10, 2008
|