Interlocking blades of lime-green sotol, Dasylirion wheeleri (top) and agave, Agave deserti, in Catalina State Park, Santa Catalina Mtns.,AZ.

Honey Bee Canyon, Oro Valley, AZ, with lush stand of saguaro cacti, Carnegiea gigantea, at sunset against the Santa Catalina Mountains.

Catalina State Park, AZ. Patterns of the Engelmann's prickly pear cactus, Opuntia phaeacantha, with delicate grass entwinded in the spines in sunset afterglow.