Cyril Ruoso / Harris' hawk (Parabuteo unicinctus) on nest in a Boojum tree (Fouquieria columnaris) Vizcaino Desert, Baja California, Mexico, May.

Philippe Clement / Ocotillo {Fouquieria splendens} in bloom and Saguaro cactus {Carnegiea gigantea}, Organ Pipe Cactus National Monument, Arizona, USA

Jack Dykinga / Ocotillo (Fouquieria splendens) and Saguaro (Carnegiea gigantea) cacti silhouetted against a colourful sunset, Cabeza Prieta National Wildlife Reserve, Arizona

Jack Dykinga / Solitary Saguaro cactus (Carnegiea gigantea)surrounded by Ocotillo (Fouquieria splendens) and other desert plants, Sierra Pinacate, Mexico

Tom Vezo / Saguaro (Carnegiea gigantea) cactus, Ocotillo (Fouquieria splendens) Prickly Pear (Opuntia sp) cactus, and Cholla (Opuntia sp) cactus, Sonoran Desert, Tucson, Arizona

Tim Fitzharris / Ocotillo (Fouquieria splendens) Saguaro (Carnegiea gigantea) Greasewood (Sarcobatus sp) and Palo Verde (Parkinsonia sp), Arizona

Tim Fitzharris / Ocotillo (Fouquieria splendens) and Saguaro (Carnegiea gigantea) cacti, Santa Catalina Mountains, Arizona

Claudio Contreras / Ocotillo (Fouquieria splendens), Teddy-bear cholla (Cylindropuntia bigelovii) and Saguaro cactus (Carnegiea gigantea) in volcanic ash field, El Pinacate Biosphere Reserve, Sonoran desert, Mexico.

Jack Dykinga / Notch-leaved phacelia (Phacelia crenulata) flowering beside Ocotillo (Fouquieria splendens) with Saguaro cacti (Carnegiea gigantea) behind, Sonoran Desert National Monument, Arizona, USA, March 2023....

Jeff Foott / Small ballmoss (Tillandsia recurvata) growing on Boojum tree (Fouquieria columnaris) branch. Baja California, Mexico.

Jeff Foott / Small ballmoss (Tillandsia recurvata) growing on Boojum tree (Fouquieria columnaris) branch. Baja California, Mexico.

Jeff Foott / Small ballmoss (Tillandsia recurvata) growing on Boojum tree (Fouquieria columnaris) branch. Baja California, Mexico.