Tagged as Cleistocactus margaritianus. No such species is mentioned in Plants Of The World Online.
Madrid Botanical Garden, 10/06/21
Regards,
Cleistocactus? from Madrid Botanical Garden
Re: Cleistocactus? from Madrid Botanical Garden
Looks more like wendlandiorum, not like baumannii IMHO.
Re: Cleistocactus? from Madrid Botanical Garden
Yes, I agree. Thank you anttisepp.