Agave, Royal agave, Agave victoriae-reginae, Detail of green leaves showing pattern.

Cactus, Torch Cactus, Echinopsis spachiana, Close up detail showing the spiky pattern.-

Cactus, Torch Cactus, Echinopsis spachiana, Close up detail showing the spiky pattern.-

Prickly Pear Cactus, Opuntia cochenillifera, Close up of purple coloured fruit-

Cactus, Golden Barrel Cactus, Echinocactus grusonii, Mass of small spiky cacti.-

Yucca, Yucca Elephantipes, Single plant growing outdoor against a wall.-

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

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

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

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

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

Cactus, Golden Barrel Cactus, Echinocactus grusonii, Detail of spiky plant showing mass of needles.-