White flowers of crown of thorns (Euphorbia milii) in greenhouses of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, February 23, 2017
Flowers of Christ s Thorn Jujube (Sidra tree, Ziziphus spina-christi) on Al Sham Street in area of West Bay. Doha, Qatar, April 17, 2014
Crown of thorns plant (Euphorbia milii, Euphorbia splendens) in Al Shamal City Park. Ruwais, Northern Qatar, April 3, 2015
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
Large bush of desert thorn Lycium shawii in a silty depression on roadside of a road to Zubara, area of Al Magdah farms. Northern Qatar, February 6, 2016
Hattie Thorn - Cecil Morgan cottage (1883) at 1435 Jackson Avenue near Prytania Street in Lower Garden District. New Orleans, Louisiana, May 16, 2006
Bushes of desert thorn Lycium shawii in Al Mardiya - Wasit area. Northern Qatar, February 20, 2016
Flowers of desert thorn Lycium shawii near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Fruits (Kanar) of Christ s Thorn Jujube (sidra tree, Ziziphus spina-christi) in Irkhaya Farms. South-western Qatar, March 29, 2014
Blooming bush of desert thorn Lycium shawii in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, March 4, 2011
Thorn apple (datura) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, October 25, 2008
Sand button (fruit of creeping thorn rose, Neurada procumbens, local name saadan) taken from Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Qatar, April 8, 2016
Spiral shaped red seed pod taken from Madras thorn acacia (Pithecellobium dulce) found near Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, May 10, 2013
Branch of desert thorn Lycium shawii with orange berries (masie) near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Blooming sand button (creeping thorn rose, Neurada procumbens, local name saadan) on sand dunes near the spring in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, March 18, 2016
Blooming desert thorn Lycium shawii near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Thorn Acacia (Acacia ehrenbergiana, local name Salam) near road to Trainah. Southern Qatar, November 7, 2014
Flowers of Madras thorn acacia (Pithecellobium dulce) near Barzan Towers. Doha, Qatar, March 7, 2015
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
Thorn acacia (Acacia ehrenbergiana) with dry fruits on roadside in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, June 10, 2016
Black caterpillars eating Sand button (creeping thorn rose, Neurada procumbens, local name saadan) near a road to Saudi Arabia in southern Qatar, February 11, 2014
Blooming branch of desert thorn Lycium shawii near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Sensitive brier (Schrankia uncinata) with a pinkish red fluffy flower ball on a thorn-covered stem on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2008
Back lit dehisced seed pod taken from Madras thorn acacia (Pithecellobium dulce) found near Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, May 10, 2013
Plant of camel s thorn (Alhagi maurorum) in a silty depression in Al Nuaman (Al Numan) near Zubara. Northern Qatar, January 8, 2015
Desert thorn Lycium shawii near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Orange berry (Masaa) of desert thorn (Lycium shawii, local name Awsaj). Harrarah, 40 miles south-west from Doha, Qatar, March 12, 2010
Caterpillar feast on Sand button (creeping thorn rose, Neurada procumbens, local name saadan) near a road to Saudi Arabia in southern Qatar, February 11, 2014
Hattie Thorn - Cecil Morgan cottage (1883) at 1435 Jackson Avenue, near Prytania Street at evening. New Orleans, Louisiana, March 31, 2006
Close up of a flower of Christ s Thorn Jujube (Sidra tree, Ziziphus spina-christi) collected near Dareen Tower in West Bay. Doha, Qatar, February 1, 2014
Fruit of Madras thorn acacia (Pithecellobium dulce) taken from Al Intisar Street in Onaiza area. Doha, Qatar, May 11, 2015
Blooming bush of desert thorn Lycium shawii. Harrarah, 40 miles south-west from Doha, Qatar, March 12, 2010
Desert thorn Lycium shawii in a depression near a road to Al Numan. Northern Qatar, February 27, 2016
Black caterpillars on Sand button (creeping thorn rose, Neurada procumbens, local name saadan) near a road to Saudi Arabia in southern Qatar, February 11, 2014
Red berries (masie) of Desert Thorn (Lycium shawii, Lycium arabicum, local name Awsaj) in a depression on roadside of a road to Zubara, area of Al Magdah farms (Thaghab Al Majda). Qatar, February 28, 2014
Bush of desert thorn Lycium shawii near Uwaynat Bin Husayn (Water Well) near Simaisma. Qatar, February 13, 2016
Thorn Acacia (Acacia ehrenbergiana, local name Salam) trimmed by grazing camels in desert near Cave of Brightness in south central area. Qatar, February 19, 2010
Acacia ehrenbergiana with white thorns on roadside of Salwa Road in area of Khashem Al Nekhsh. Qatar, November 27, 2015
Branched thorns growing from a trunk of honey locust (Gleditsia triacanthos) near Deer Run Trail in Rock Bridge State Park. Columbia, Missouri, September 12, 2005
Fallen fruits (Kanar) of Christ s Thorn Jujube (sidra tree, Ziziphus spina-christi) in Irkhaya Farms. South-western Qatar, March 29, 2014
Branch of desert thorn Lycium shawii with flowers near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Leaf-footed bug (Coreidae) Leptoglossus zonatus on a thorn apple (datura fruit) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 18, 2008
Feast of black caterpillars Sand button (creeping thorn rose, Neurada procumbens, local name saadan) near a road to Saudi Arabia in southern Qatar, February 11, 2014
Desert plant Sand button (creeping thorn rose, Neurada procumbens, local name saadan) near a road to Saudi Arabia in southern Qatar, February 11, 2014
Flowerbed with crown of thorns plant (Euphorbia milii, Euphorbia splendens) on Corniche Promenade. Doha, Qatar, February 27, 2014
Flowers of Christ s Thorn Jujube (Sidra tree, Ziziphus spina-christi) collected near Dareen Tower in West Bay. Doha, Qatar, February 1, 2014
Flower of Madras thorn acacia (Pithecellobium dulce) found near Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, May 10, 2013
Green, reddish seed pod taken from Madras thorn acacia (Pithecellobium dulce) found near Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, May 10, 2013
Fruits of Christ s Thorn Jujube (Sidra tree, Ziziphus spina-christi) collected near Dareen Tower in West Bay. Doha, Qatar, February 1, 2014
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) in Harrarah, 40 miles south-west from Doha. Qatar, March 2, 2012
Seed pod of Madras thorn acacia (Pithecellobium dulce) found near Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, May 10, 2013
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) near a road to Sawda Natheel in southern Qatar, February 11, 2014
Shoot of Umbrella Thorn (Acacia tortilis) in Trainah gardens. Southern Qatar, March 5, 2014
Twig with flowers of Christ s Thorn Jujube (Sidra tree, Ziziphus spina-christi) taken from Al Sham Street in area of West Bay. Doha, Qatar, April 17, 2014
Seed pods of Madras thorn acacia (Pithecellobium dulce) on Al Istiqlal Street in West Bay. Doha, Qatar, April 22, 2014
Thorns of Cornulaca aucheri (local name thalj) south from Abu Nahlah. Qatar, April 25, 2014
Ripe seed pods of Madras thorn acacia (Pithecellobium dulce) on Al Istiqlal Street in West Bay. Doha, Qatar, April 28, 2014
Shoot of Christ s Thorn Jujube (Sidra tree, Ziziphus spina-christi) on Al Istiqlal Street in West Bay. Doha, Qatar, May 5, 2014
Bright green leaves of desert thorn Lycium shawii on Jebel Fuwairit. Qatar, October 3, 2014
Thorn Jujube (Sidra tree, Ziziphus spina-christi) near Al Sham Street in West Bay. Doha, Qatar, October 20, 2014
Flowers of desert thorn Lycium shawii at entrance of Ras Abrouq Peninsula near Zekreet. Qatar, November 14, 2014
Twig of desert thorn (Lycium shawii) with fresh leaves near Zubara. Northern Qatar, December 12, 2014
Seedling of desert thorn (Lycium shawii) near Al Khor Hospital. Qatar, December 13, 2014
Female flowers of Prickly Dock (Emex spinosa) with three thorns on Green Circles (center-pivot irrigation) in Irkhaya Farms. Qatar, January 16, 2015
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
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
Flowers of crown of thorns (Euphorbia milii, Euphorbia splendens) in Al Shamal City Park. Ruwais, Northern Qatar, April 3, 2015
Thorn acacia (Acacia ehrenbergiana) with dry fruits on windblown sand on roadside of Salwa Road in area of Khashem Al Nekhsh. Southern Qatar, July 11, 2015
Dry seed pods of thorn acacia (Acacia ehrenbergiana) on roadside of Salwa Road in area of Khashem Al Nekhsh. Southern Qatar, July 11, 2015
Succulent and spiny shoot of Desert Thorn (Lycium shawii) taken from a rocky ridge of Jebel Fuwairit. Northern Qatar, August 22, 2015
Crown of thorns (Euphorbia milii, Euphorbia splendens) planted in Al Shamal City Park. Ruwais, Northern Qatar, November 20, 2015
Flowers of desert thorn (Lycium shawii, local name Awsaj) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
Orange berries (Masaa) of desert thorn (Lycium shawii, local name Awsaj) on roadside near Fuwairit. Northern Qatar, January 29, 2016
Flower of desert thorn Lycium shawii near a road to Zubara in area of Al Magdah farms. Northern Qatar, February 13, 2016
Bush of desert thorn Lycium shawii in a depression in Al Mardiya - Wasit area. Northern Qatar, February 13, 2016
Crown of thorns (Euphorbia milii, Euphorbia splendens, large blooms type) in a park at Al Rafiei Street in Onaiza area. Doha, Qatar, February 16, 2016
Desert thorn Lycium shawii in a silty depression near a road to Zubara, area of Al Magdah farms. Northern Qatar, February 27, 2016
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) in windblown sand on roadside of Salwa Road in area of Khashem Al Nekhsh. Southern Qatar, March 4, 2016
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) with a white flower on sand dunes near the spring in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, March 18, 2016
Sand button (creeping thorn rose, Neurada procumbens, local name saadan) on sand dunes near the spring in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, March 18, 2016
Flowers of thorn acacia (Acacia ehrenbergiana, local name Salam) in a green depression in Harrarah (Al Kharrarah). Southern Qatar, April 23, 2016
Madras thorn acacia (Pithecellobium dulce) on Al Mawrid Street in Al Lejbailat area. Doha, Qatar, May 26, 2016
Thorn lichen Cladonia uncialis and green moss in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016
Pillow shaped thorn lichen Cladonia uncialis in Zakhodskoe, 50 miles north from Saint Petersburg. Russia, July 10, 2016
Thorns of a cactus in Antique Rose Emporium. Independence, Texas, April 6, 2019
Thorn lichen Cladonia uncialis in a dry pine forest in Zakhodskoe (Lounatjoki), 50 miles north from Saint Petersburg. Russia, May 9, 2019
Blooming Carolina wolfberry (box-thorn, Christmas-berry, Lycium carolinianum var. quadrifidum, Solanaceae) on Clapper Rail Trail in Galveston Island State Park. Texas, December 20, 2019
Flower of Carolina wolfberry (box-thorn, Christmas-berry, Lycium carolinianum var. quadrifidum, Solanaceae) on Clapper Rail Trail in Galveston Island State Park. Texas, December 20, 2019
Flower and red berry of Carolina wolfberry (box-thorn, Christmas-berry, Lycium carolinianum var. quadrifidum, Solanaceae) on Clapper Rail Trail in Galveston Island State Park. Texas, December 20, 2019
Agave with orange thorns in Antique Rose Emporium. Independence, Texas, March 31, 2020
Thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
Close up of thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
Thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
Texture of thorn lichen Cladonia uncialis in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, May 25, 2019
Red berries of Carolina wolfberry (box-thorn, Christmas-berry, Lycium carolinianum var. quadrifidum, Solanaceae) on Clapper Rail Trail in Galveston Island State Park. Texas, December 20, 2019
Shoot with berries of Carolina wolfberry (box-thorn, Christmas-berry, Lycium carolinianum var. quadrifidum, Solanaceae) on Clapper Rail Trail in Galveston Island State Park. Texas, December 20, 2019
Tuft of striped ramalina lichen (Ramalina montagnei) growing on thorns of black locust in Lick Creek Park. College Station, Texas, January 13, 2020
Striped ramalina lichen (Ramalina montagnei) on a thorn of black locust in Lick Creek Park. College Station, Texas, January 13, 2020
Thorns of Huisache (Acacia farnesiana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
Bunny Ears Cactus (Opuntia microdasys) with small short thorns in Antique Rose Emporium. Independence, Texas, November 12, 2020
Close-up of Bunny Ears Cactus (Opuntia microdasys) with small short thorns in Antique Rose Emporium. Independence, Texas, November 12, 2020
Thorns of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest, Texas, November 19, 2020
Thorns growing from a trunk of honey locust (Gleditsia triacanthos) in Lick Creek Park. College Station, Texas, December 11, 2020
McKelvey agave (thorn-crested agave, Agave univittata) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, July 7, 2022
