John Abbott / Giant prickly pear cactus (Opuntia echios var. gigantea) amongst carpetweed, Plazas Island, Galapagos
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Floris van Breugel / Cholla cactus (Opuntia) backlit by setting sun, Anza Borrego State Park. California, USA. April 2009.
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Jack Dykinga / Dense stands of Prickly pear cactus (Opuntia sp) in Tamaulipas, Mexico
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Jack Dykinga / Gopher snake (Pituophis sp) amongst Lechuguilla (Agave lechuguilla) and prickly pear cacti (Opuntia macrocentra), Maderas del Carmen Natural Reserve, Mexico
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Rolf Nussbaumer / Digital composite of Cardinal, Mockingbird, Green jay, House finch, Pine warbler, Golden-fronted woodpecker, Chipping sparrow, birds landing on Texas prickly pear cactus (Opuntia lindheimeri), Dinero,...
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Stefan Huwiler / Prickly Pear Cactus (Opuntia echios) in dusty landscape. Puerto Egas Bay, Santiago Island, Galapagos Islands, Ecuador, South America, September 2008.
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Jean E. Roche / Prickly pear cactus fruit (Opuntia sp), Ostriconi, Agriate, Corsica, France, September
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Rolf Nussbaumer / Texas Prickly Pear Cactus (Opuntia engelmanni), plant blooming. Laredo, Webb County, South Texas, USA, April.
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Rolf Nussbaumer / Texas Prickly Pear Cactus (Opuntia engelmanni), plant blooming. Laredo, Webb County, South Texas, USA, April.
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Rolf Nussbaumer / Texas Prickly Pear Cactus (Opuntia engelmanni), plant blooming. Laredo, Webb County, South Texas, USA, April.
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Rolf Nussbaumer / Texas Prickly Pear Cactus (Opuntia engelmanni), plant blooming. Laredo, Webb County, South Texas, USA, April.
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Daniel Heuclin / Engelman's Prickly pear (Opuntia engelmani) with fruit, Oliver Lee State park. New-Mexico, USA
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Suzi Eszterhas / Sweat Bee (Halictidae) pollinating Prickly Pear Cactus flower (Opuntia mercerize) Red Corral Ranch, Texas, USA
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Suzi Eszterhas / Digger Bee (Anthophorini) pollinating Prickly Pear Cactus flower (Opuntia mercerize) Red Corral Ranch, Texas, USA
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Suzi Eszterhas / Prickly Pear Cactus (Opuntia mercerize) close-up of stamen and petals of flower, Red Corral Ranch, Texas, USA
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Patricio Robles Gil / Prickly pear cactus {Opuntia sp} covered in dew, Chihuahuan desert, Mexico
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Patricio Robles Gil / Prickly pear cactus {Opuntia sp} covered in dew, Chihuahuan desert, Mexico
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Juan Carlos Munoz / Prickly pear / cholla {Opuntia sp} cactus covered in cobwebs, Andalucia, Spain, December
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Juan Carlos Munoz / Prickly pear / cholla {Opuntia sp} cactus covered in cobwebs, Andalucia, Spain, December
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Juan Carlos Munoz / Prickly pear / cholla {Opuntia sp} cactus covered in cobwebs, Andalucia, Spain, December
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Tim Laman / Giant prickly pear cacti (Opuntia sp.). Cerro Dragon, Santa Cruz Island, Galapagos Islands.
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Tim Laman / Giant prickly pear cactus (Opuntia sp.). Cerro Dragon, Santa Cruz Island, Galapagos Islands.
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Tim Laman / Giant prickly pear cacti (Opuntia sp.), Santa Cruz Island, Galapagos Islands.
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Tim Laman / Giant prickly pear cactus (Opuntia sp.) growing on Champion Islet off Floreana (Charles) Island, Galapagos Islands.
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Tim Laman / Giant prickly pear cactus (Opuntia sp.), Cerro Dragon, Santa Cruz Island, Galapagos Islands.
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Tim Laman / Giant prickly pear cacti (Opuntia sp.). Cerro Dragon, Santa Cruz Island, Galapagos Islands.
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Tim Laman / Giant prickly pear cactus (Opuntia sp.), Santa Cruz Island, Galapagos Islands.
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Doug Wechsler / Eastern Prickly Pear Cactus {Opuntia humifusa} in flower, Delaware Bay, New Jersey, USA
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Jack Dykinga / Servilletta Canyon's walls with Gumbo Limbo (Bursera simaruba) trees, bromeliads (Bromeliad sp), agaves (Agave sp) and Prickly pear cacti (Opuntia sp). Tamaulipas, Mexico
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Jack Dykinga / Prickly pear cactus (Opuntia engelmannii) amid grassland and and Sotol (Dasylirion leiophyllum) plants, with the sun setting over distant ridges in the Sierra Carmen. Maderas del Carmen Natural Preser...
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Jack Dykinga / Prickly pear cactus (Opuntia engelmannii) and Sotol (Dasylirion leiophyllum) with the sun setting over rocky outcrops in the Sierra Carmen. Maderas del Carmen Natural Preserve, Coahuila, Mexico
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Tim Laman / Giant Prickly Pear Cactus (Opuntia sp.) and other vegetation on Santa Cruz Island. June 1993.
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Tim Laman / Giant cholla cactus {Opuntia sp} Galapagos
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Tim Laman / Giant Prickly Pear Cactus (Opuntia sp) and other vegetation on Isabela Island, Galapagos Islands, June 1993.
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John Cancalosi / Cholla / Prickly pear Cactus Fruit (Opuntia spp.) Sonoran Desert, Arizona, USA
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John Cancalosi / Cholla / Prickly pear Cactus Fruit (Opuntia spp.) Sonoran Desert, Arizona, USA
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Pete Oxford / Giant opuntia cactus {Opuntia echios barringtonensis} Sante Fe Is, Galapagos
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Rob Tilley / Desert Prickly Pear Cactus with pink flower {Opuntia sp}, Canyonlands NP, Utah, USA
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Rob Tilley / Desert Prickly Pear Cactus flowers {Opuntia sp} Canyonlands NP, Utah, USA
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Rob Tilley / Desert Prickly Pear Cactus with yellow flower {Opuntia sp} Canyonlands NP, Utah, USA
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Rob Tilley / Desert Prickly Pear Cactus with pink flower {Opuntia sp} Canyonlands NP, Utah, USA
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Rob Tilley / Prickly Pear Cactus flowers {Opuntia sp} Arches NP, Utah, USA
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Philippe Clement / Staghorn cholla {Cylindropuntia / Opuntia versicolor}, Engelmann's prickly pear {Opuntia engelmannii} and other cacti species, Saguaro NP, Arizona, USA
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Rolf Nussbaumer / Texas Prickly Pear Cactus {Opuntia lindheimeri} flower with water drops, Hill Country, Texas, USA
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Pete Oxford / Fibrous structure of Prickly pear cactus {Opuntia sp} Galapagos
