 Flower and fruits of Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Flowers of Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Fruits of Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Blooming Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Christmas cholla cactus (Tasajillo, Opuntia leptocaulis) on Homestead Trail in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Leathery flower of Mirabilis (Four-O clock family) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Garden spider (Argiope aurantia(?)) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Pink fameflower (Phemeranthus longipes) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Smallhead doll s daisy (Boltonia diffusa)(?) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Branched blazing star (Aggie-land gayfeather, Liatris cymosa) in a ranch at 7278 Batts Ferry Road. College Station, Texas, August 1, 2014
 Christmas cactus (Tasajillo, Cylindropuntia leptocaulis) on a fence at Road 322 south from Milano. Texas, December 1, 2012
 Rock-shield lichen Xanthoparmelia and a broken limb of Christmas cactus (Tasajillo, Cylindropuntia leptocaulis) in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
 Paper-spined cholla cactus (Opuntia articulata) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 18, 2014
 Cotton field from Road 50 near Batts Ferry Lane, 5 miles west from College Station. Texas, August 9, 2008
 Tasajillo (Cylindropuntia) cactus taken from a fence at Road 322 south from Milano. College Station, Texas, December 2, 2012
 Middle Bayou from Road 50, 4 miles south-east from crossing with Road 60, near Batts Ferry Road, south from College Station, Texas, July 19, 2009
 Dry landscape with caked mud of Middle Bayou near Road 50, 4 miles south-east from crossing with Road 60, near Batts Ferry Road, south from College Station, Texas, July 19, 2009
 Details of the mud texture in Middle Bayou near Road 50, 4 miles south-east from crossing with Road 60, near Batts Ferry Road, south from College Station, Texas, July 19, 2009
 Animal tracks on the mud of Middle Bayou near Road 50, 4 miles south-east from crossing with Road 60, near Batts Ferry Road, south from College Station. Texas, July 19, 2009
 Paper-spined cholla cactus (Opuntia articulata) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 20, 2013
 Nymphs of cactus bug Chelinidea vittiger feeding on Opuntia cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2021
 - Caprock Canyons 11/2/97 - Tasajillo (Christmas cactus) (Caprock Canyons State Park - Dallas, November 2 - 8, 1997)
 Middle Bayou near Road 50, 4 miles south-east from crossing with Road 60, near Batts Ferry Road, south from College Station. Because of dry spell and hot weather, water level dropped revealing caked mud and bare iron bridges at the bottom of the bayou. Texas, July 19, 2009
 Yellow flower of prickly pear cactus (Opuntia) in Lick Creek Park. College Station, Texas, May 7, 2020
 Flower of prickly pear cactus (Opuntia engelmanii(?)) in Lick Creek Park. College Station, Texas, May 4, 2020
 Yellow flower of prickly pear cactus (Opuntia engelmanii(?)) with a bee in Lick Creek Park. College Station, Texas, May 4, 2020
 Yellow flower of pricly pear cactus (Opuntia) on Closed Trail in Lick Creek Park. College Station, Texas, May 4, 2024
 Cholla cactus in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 Cholla cactus (cylindropuntia) in Antique Rose Emporium. Independence, Texas, August 15, 2009
 Brown cow among bluebonnet flowers in 3B Ranch at 1505 Dannheim Road, east from Christmas Road. West from Independence, Texas, April 7, 2008
 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
 Cow with cattle egrets among bluebonnet flowers in 3B Ranch at 1505 Dannheim Road, east from Christmas Road. West from Independence, Texas, April 7, 2008
 Grazing cows among bluebonnet flowers in 3B Ranch at 1505 Dannheim Road, east from Christmas Road. West from Independence, Texas, April 7, 2008
 Blooming cholla cactus(cylindropuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2012
 Flower bud of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Prickly peas (Opuntia) cactus in Lick Creek Park. College Station, Texas, December 18, 2018
 Blooming prickly pear cactus (Opuntia engelmanii(?)) in Lick Creek Park. College Station, Texas, May 4, 2020
 Prickly pear cactus (Opuntia) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 21, 2018
 Barbary fig cactus (Opuntia ficus-indica) growing as crop in Rawdat Al Faras Research Station (RAFRS, or Qatar University Farm) near Al Zubara Road. Qatar, April 20, 2016
 Cactus pads of Barbary fig (Opuntia ficus-indica) growing as crop in Rawdat Al Faras Research Station (RAFRS, or Qatar University Farm) near Al Zubara Road. Qatar, April 20, 2016
 Flower buds on a pad of prickly pear cactus (Opuntia) in Bastrop State Park. Bastrop, Texas, April 15, 2023
 Green flower buds of prickly pear cactus (Opuntia) in Bastrop State Park. Bastrop, Texas, April 15, 2023
 Pad decay fungus Aspergillus alliaceus(?) (black) on prickly pear cactus (Opuntia) on Kiwanis Nature Trail. College Station, Texas, December 20, 2017
 Sprout of prickly pears cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 6, 2008
 Dried sap of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 8, 2009
 New growth of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 1, 2009
 Warped pad of prickly pear cactus (Opuntia) with a cladode rot fungus Aspergillus alliaceus(?) (black) on Kiwanis Nature Trail. College Station, Texas, December 20, 2017
 Pad of pricly pears (opuntia) cactus with snow in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, December 10, 2008
 Blooming Prickly pears (Opuntia) cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2009
 Blooming prickly pear cactus (Opuntia) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, April 28, 2024
 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
 Prickly peas (Opuntia) cactus at the entrance in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, December 3, 2021
 Emerging pad of prickly pear cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2018
 Prickly peas (Opuntia cactus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 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
 Tender young pad or nopalitos of prickly pear cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2018
 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
 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
 Fruit of cholla cactus (cylindropuntia) on Blue Creek Trail. Big Bend National Park, November 29, 2009
 Nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) with flower buds on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 21, 2018
 Prickly pears (Opuntia) near Howdy Haus at Floriculture Road in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 3, 2022
 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
 Coreid bugs Chelinidea vittiger (adult with feeding nymph) on a pad of prickly pear cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 7, 2008
 Yellow flower of prickly pear cactus (Opuntia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Cane Cholla cactus and Southeast Rim, view from east part of Dodson Trail. Big Bend National Park, Texas, November 23, 2007
 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
 Offshoot of nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, August 1, 2013
 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
 Circular clumps of nipple cactus (Missouri foxtail cactus, Escobaria missouriensis, Coryphantha missouriensis) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, August 1, 2013
 El Capitan Mountain with cholla cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 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
 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
 Flower of shaggy portulaca (rose purslane, Portulaca pilosa) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 2, 2020
 Shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, March 22, 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
 Prickly pear cactus (Opuntia) in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 21, 2016
 Tender young pads or nopalitos of prickly pear cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, May 13, 2012
 Ranch with a field of yellow black-eyed susan flowers near Clay, view from Road 50, south from College Station, May 17, 2010
 Shoot of Opuntia cactus in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, February 23, 2017
 Furry Opuntia cactus in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, February 23, 2017
 Snail feeding on a fresh young pad of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Bunny Ears Cactus (Opuntia microdasys) with small short thorns in Antique Rose Emporium. Independence, Texas, November 12, 2020
 Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Flower spike of king ranch bluestem grass (Bothriochloa ischaemum) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, October 15, 2020
 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
 Close-up of Bunny Ears Cactus (Opuntia microdasys) with small short thorns in Antique Rose Emporium. Independence, Texas, November 12, 2020
 King ranch bluestem grass (Bothriochloa ischaemum) in Bee Creek Park. College Station, Texas, August 12, 2020
 Young pads 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
 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
 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
 Inflorescence of king ranch bluestem grass (Bothriochloa ischaemum) in Bee Creek Park. College Station, Texas, August 12, 2020
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Blooming prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
 Dry pad skeleton of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Dry skeleton of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 22, 2022
 Dry pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
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