Symmetry in nature: A Queen Victoria agave Agave victoriae-reginae in the Arizona Cactus Garden, Stanford University, Palo Alto, California #JoshuaTree #cactus #stanford #plants #paloalto #stanforduniversity #arizonacactusgarden

Lean on me. A Joshua Tree leaning in the Arizona Cactus Garden, Stanford University, Palo Alto, California #JoshuaTree #cactus #stanford #plants #paloalto #stanforduniversity #arizonacactusgarden

Echinopsis aka Hedgehog Cactus in bloom at the Arizona Cactus Garden, Stanford University, Palo Alto, California #Echinopsis #cactus #stanford #plants #paloalto #stanforduniversity #arizonacactusgarden #flowers