A new publication with the above title redraws the species limits within this cactus genus. This might be important for Identification and i post a picture of the species distribution cropped from the above paper to help with ID
also the genus Pilosocereus has been flagged, as most of the species names needed to implemet the changes are not currently available on iNat. https://www.inaturalist.org/flags/397345
@mreith Thank you for sharing this, I can now identify my observations of Piloscereus as Pilosocereus moritzianus, although currently P. moritzianus is a synonym of P. lanuginosus.
Closing to focus discussion on the flag