cereus peruvianus, a form of monstrosus with yellow spines, comparative ruler is one inch long

areola axilla background beautiful beauty best better botanical botany cactus cereus colorful comparative decoration decorative delicate design elegant equilibrium evolution excellence excellent exclusive exotic flora flowery form genetics good green greenery grow growing growth hair harmony herbal hothouse inch increasing isolated long monstrosus natural nature nipple old one peruvianus quality romantic ruler sensuality silhouette sixteen snapshot spines spiny success succulent thorn wreath years yellow