Cleistocactus winteri

Cleistocactus winteri AKA Hildewintera aureispina is a common hanging basket plant, favored for it's golden stems. Nice orange flowers is a great bonus. Wide open flower was the reason this species was not recognized as CLeistocactus, but in all it is a very close relative and should be included into this genus
The plant in picture grows in Stanford Arizona Garden, planted in the ground.