Cactus, Mexican Giant Cardon, Pachycereus pringlei, Details of spiky plant against blue sky.-

Cactus, Coastal Prickly Pear Cactus, Opuntia littoralis, Detail showing pattern of spiky needles.-

Cactus, Prickly Pear Cactus, Opuntia cochenillifera, Detail of spiky plant against blue sky.-

Cactus, Tunicata Cactus, Opuntia tunicata, Detail showing pattern of spiky needles.-

Cactus, Tunicata Cactus, Opuntia tunicata, Detail showing pattern of spiky needles.-

Cactus, Pincushion Cactus, Mammillaria bombycina, Aerial view of spiky plants.-

Cactus, Barrel cactus, Erocactus echidne, Detail showing pattern of spiky needles.-

Euphorbia polyacantha, Mass of spiky plants growing outdoor.-

Candelabra tree, Euphorbia candelabrum, Side view showing pattern against a blue sky.-

Euphorbia echinus, Detail showing the pattern of spiky needles.-

Cactus, Golden Barrel Catus, Echinocactus Grusonii var. Subinermis, Aerial view showing pattern of the spiky needles.-

Euphorbia echinus, Mass of green spiky plants growing outdoor.-