![](../../pictures/archives/compress/2007/610/jpeg/14t.jpg) Purple spineless prickly pears cactus in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/610/jpeg/16t.jpg) Hedgehog cactus (Echinocereus viridiflorus) on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/610/jpeg/11t.jpg) On a hill south from Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/610/jpeg/12t.jpg) Yucca on a hill west from entrance in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/610/jpeg/13t.jpg) Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/610/jpeg/10t.jpg) Cliff above Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/609/jpeg/04t.jpg) Magenta tinged echinocereus hedgehog actus on El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
![](../../pictures/archives/compress/2007/609/jpeg/13t.jpg) El Capitan Mountain with prickly pears cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
![](../../pictures/archives/compress/2007/610/jpeg/18t.jpg) Totem-like columns of volcanic tuff across Limpia Creek, view from Road 17. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/610/jpeg/17t.jpg) Columnar jointed palisade appearance of vertical lava flows along Limpia Canyon, view from Road 17. Fort Davis, Texas, December 29, 2007
![](../../pictures/archives/compress/2007/609/jpeg/10t.jpg) Prickly pears near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
![](../../pictures/archives/compress/2007/609/jpeg/09t.jpg) Prickly pears and yucca near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
![](../../pictures/archives/compress/2007/607/jpeg/13t.jpg) Prickly pears cactus in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
![](../../pictures/archives/compress/2007/604/jpeg/25t.jpg) Purple-tinged prickly pear cactus in the middle part of Smokey Creek Trail. Big Bend National Park, Texas, November 25, 2007
![](../../pictures/archives/compress/2007/605/jpeg/13t.jpg) Purple-tinged prickly pear cactus on Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
![](../../pictures/archives/compress/2007/574/jpeg/05t.jpg) Prickly pears cactus near Fishing Beach. Sandy Hook, New Jersey, March 11, 2007
![](../../pictures/archives/compress/2007/574/jpeg/04t.jpg) Prickly pears cactus (zoomed) near Fishing Beach. Sandy Hook, New Jersey, March 11, 2007
![](../../pictures/archives/compress/2007/604/jpeg/04t.jpg) Prickly pears cactus on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
![](../../pictures/archives/compress/2008/686/jpeg/02t.jpg) Prickly pears cactus on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
![](../../pictures/archives/compress/2020/2662/jpeg/16t.jpg) Dry pad skeleton of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
![](../../pictures/archives/compress/2020/2654/jpeg/07t.jpg) Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
![](../../pictures/archives/compress/2024/3480/jpeg/02t.jpg) Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2011/936/jpeg/18t.jpg) Blooming prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
![](../../pictures/archives/compress/2001/214/jpeg/37t.jpg) Prickly pears (sabra) cactus on the roadside in Nizzanim. The Middle East, July 19, 2001
![](../../pictures/archives/compress/1997/35/jpeg/06t.jpg) - Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
![](../../pictures/archives/compress/1997/35/jpeg/00t.jpg) - Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
![](../../pictures/archives/compress/1997/35/jpeg/04t.jpg) - Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
![](../../pictures/archives/compress/1997/35/jpeg/07t.jpg) - Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
![](../../pictures/archives/compress/1997/35/jpeg/01t.jpg) - Turner Falls and a festival in Davis OK 6/28/97 (Turner Falls - a trip to Colorado Mountains, June 28 - July 5, 1997)
![](../../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/2007/609/jpeg/03t.jpg) Cactus on rocks of El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
![](../../pictures/archives/compress/2007/609/jpeg/08t.jpg) Hedgehog cactus near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
![](../../pictures/archives/compress/2009/736/jpeg/18t.jpg) Vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
![](../../pictures/archives/compress/2007/608/jpeg/22t.jpg) Cushion cactus and El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
![](../../pictures/archives/compress/2009/736/jpeg/19t.jpg) Snail feeding on a fresh young pad of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
![](../../pictures/archives/compress/2009/736/jpeg/15t.jpg) Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
![](../../pictures/archives/compress/2000/121/jpeg/07t.jpg) 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
![](../../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/2007/609/jpeg/12t.jpg) El Capitan Mountain with cholla cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
![](../../pictures/archives/compress/2008/640/jpeg/21t.jpg) Sprout of prickly pears cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 6, 2008
![](../../pictures/archives/compress/2009/740/jpeg/13t.jpg) New growth of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 1, 2009
![](../../pictures/archives/compress/2009/745/jpeg/03t.jpg) Dried sap of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 8, 2009
![](../../pictures/archives/compress/2009/738/jpeg/21t.jpg) Blooming Prickly pears (Opuntia) cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2009
![](../../pictures/archives/compress/2008/640/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2009/736/jpeg/17t.jpg) Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) with fleshy, green, leaf-like phylloclades in Antique Rose Emporium. Independence, Texas, April 19, 2009
![](../../pictures/archives/compress/2007/602/jpeg/02t.jpg) Prickly pear cactus on Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
![](../../pictures/archives/compress/2014/1484/jpeg/19t.jpg) Magenta tinged seedling of a desert plant Tetraena qatarense (Zygophyllum qatarense) on Jebel Fuwairit. Qatar, October 3, 2014
![](../../pictures/archives/compress/1999/110/jpeg/22t.jpg) Burnett Creek near Davis Ferry Bridge. Indiana, November 26, 1999
![](../../pictures/archives/compress/1999/97/jpeg/20t.jpg) Davis Ferry Bridge across Wabash River north from Lafayette. Indiana, September 11, 1999.
![](../../pictures/archives/compress/1998/60/jpeg/03t.jpg) View of Wabash River from Davis Ferry Bridge north from Lafayette. Indiana, January 31, 1998.
![](../../pictures/archives/compress/2005/445/jpeg/04t.jpg) Joseph Hernandez-Davis House (1868) at 1641 Amelia Street. New Orleans, Louisiana, April 24, 2005.
![](../../pictures/archives/compress/2011/904/jpeg/07t.jpg) Mrs. Jetta Davis house (1887) at 1712 Winnie Street in East End Historic District. Galveston, Texas, January 1, 2011
![](../../pictures/archives/compress/2008/686/jpeg/26t.jpg) Mrs. Jetta Davis house (1887) at 1712 Winnie Street in East End Historic District. Galveston, Texas, November 15, 2008
![](../../pictures/archives/compress/2018/2248/jpeg/23t.jpg) Prickly pear cactus (Opuntia) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 21, 2018
![](../../pictures/archives/compress/2012/1048/jpeg/06t.jpg) Yellow flowers of prickly pears (Opuntia) in Birch Creek Unit of Lake Somerville State Park, Texas, April 29, 2012
![](../../pictures/archives/compress/2019/2620/jpeg/06t.jpg) Scaly stippled lichen (Endocarpon pusillum) on a thin layer of soil over exposed limestone rocks overgrown by prickly pears near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
![](../../pictures/archives/compress/2019/2620/jpeg/07t.jpg) Dark crust of scaly stippled lichen (Endocarpon pusillum) on a thin layer of soil over exposed limestone rocks overgrown by prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
![](../../pictures/archives/compress/2013/1318/jpeg/16t.jpg) Pads of prickly pear cactus on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 27, 2013
![](../../pictures/archives/compress/2011/903/jpeg/16t.jpg) Jake Davis(?) house on Postoffice Street in East End Historic District from a corner of 18th Street. Galveston, Texas, January 1, 2011
![](../../pictures/archives/compress/2018/2415/jpeg/25t.jpg) Prickly peas (Opuntia) cactus in Lick Creek Park. College Station, Texas, December 18, 2018
![](../../pictures/archives/compress/2024/3638/jpeg/14t.jpg) Marble tomb of Jeff Davis Pistole (9/15/1861-7/9/1902) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
![](../../pictures/archives/compress/2008/693/jpeg/05t.jpg) Pad of pricly pears (opuntia) cactus with snow in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, December 10, 2008
![](../../pictures/archives/compress/2011/984/jpeg/02t.jpg) Prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
![](../../pictures/archives/compress/2022/3156/jpeg/22t.jpg) Pad of prickly pears (Opuntia) with a bug in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
![](../../pictures/archives/compress/2012/1000/jpeg/03t.jpg) Pad of prickly pears in a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
![](../../pictures/archives/compress/2020/2699/jpeg/12t.jpg) Yellow flowers of prickly pears (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
![](../../pictures/archives/compress/2023/3403/jpeg/02t.jpg) Blooming prickly pears (Opuntia) in Lick Creek Park. College Station, Texas, May 4, 2023
![](../../pictures/archives/compress/2020/2631/jpeg/15t.jpg) Prickly pears (Opuntia) on exposed limestone rocks near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
![](../../pictures/archives/compress/2024/3501/jpeg/16t.jpg) 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
![](../../pictures/archives/compress/2024/3501/jpeg/14t.jpg) Young pads of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
![](../../pictures/archives/compress/2024/3501/jpeg/15t.jpg) 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
![](../../pictures/archives/compress/2023/3385/jpeg/15t.jpg) Flower buds on a pad of prickly pear cactus (Opuntia) in Bastrop State Park. Bastrop, Texas, April 15, 2023
![](../../pictures/archives/compress/2008/669/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2023/3385/jpeg/13t.jpg) Green flower buds of prickly pear cactus (Opuntia) in Bastrop State Park. Bastrop, Texas, April 15, 2023
![](../../pictures/archives/compress/2021/3005/jpeg/02t.jpg) 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
![](../../pictures/archives/compress/2008/675/jpeg/10t.jpg) 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
![](../../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/2008/642/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2017/2217/jpeg/11t.jpg) Pad decay fungus Aspergillus alliaceus(?) (black) on prickly pear cactus (Opuntia) on Kiwanis Nature Trail. College Station, Texas, December 20, 2017
![](../../pictures/archives/compress/2020/2631/jpeg/13t.jpg) Scaly stippled lichen (Endocarpon pusillum) on a thin layer of soil over exposed limestone rocks overgrown by prickly pears near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
![](../../pictures/archives/compress/2017/2217/jpeg/10t.jpg) 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
![](../../pictures/archives/compress/2020/2631/jpeg/14t.jpg) Close-up of scaly stippled lichen (Endocarpon pusillum) on a thin layer of soil over exposed limestone rocks overgrown by prickly pears near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 18, 2020
![](../../pictures/archives/compress/2020/2677/jpeg/23t.jpg) Young pad of prickly pears (Opuntia) in Antique Rose Emporium. Independence, Texas, March 31, 2020
![](../../pictures/archives/compress/2021/3074/jpeg/17t.jpg) Prickly peas (Opuntia) cactus at the entrance in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, December 3, 2021
![](../../pictures/archives/compress/2023/3406/jpeg/31t.jpg) Blooming prickly pear cactus (Opuntia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
![](../../pictures/archives/compress/2007/609/jpeg/15t.jpg) Frozen McKittrick Creek. Guadalupe Mountains National Park, Texas, December 28, 2007
![](../../pictures/archives/compress/2007/608/jpeg/17t.jpg) El Capitan Trail and Mountain in Guadalupe Mountains National Park. Texas, December 27, 2007
![](../../pictures/archives/compress/2007/608/jpeg/18t.jpg) El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
![](../../pictures/archives/compress/2007/608/jpeg/19t.jpg) El Capitan Mountain and Trail in Guadalupe Mountains National Park. Texas, December 27, 2007
![](../../pictures/archives/compress/2007/586/jpeg/06t.jpg) Lost Falls near Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
![](../../pictures/archives/compress/2007/586/jpeg/07t.jpg) Laurel Falls near Orange Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
![](../../pictures/archives/compress/2023/3406/jpeg/30t.jpg) Yellow flower of prickly pear cactus (Opuntia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
![](../../pictures/archives/compress/2014/1466/jpeg/03t.jpg) Prickly peas (Opuntia cactus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
![](../../pictures/archives/compress/2007/609/jpeg/22t.jpg) Agave on McKittrick Canyon Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
![](../../pictures/archives/compress/2007/609/jpeg/20t.jpg) Grotto in McKittrick Canyon, with icicles. Guadalupe Mountains National Park, Texas, December 28, 2007
![](../../pictures/archives/compress/2007/608/jpeg/20t.jpg) Agaves and El Capitan Mountain from a trail in Guadalupe Mountains National Park. Texas, December 27, 2007
![](../../pictures/archives/compress/2007/608/jpeg/15t.jpg) View from beginning of El Capitan Trail in Guadalupe Mountains National Park. Texas, December 27, 2007
![](../../pictures/archives/compress/2007/609/jpeg/06t.jpg) Dead tree from El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
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