cactus ID

[Axel Amsterdam]

This beautiful plant is for sale. Anyone knows which type it is? 

[Silas_Sancona]

30 minutes ago, Axel Amsterdam said:

This beautiful plant is for sale. Anyone knows which type it is? 

Possibly  Cleistocactus strausii

[Tom in Tucson]

The detail is lacking, but with 40% certainty: Espostoa melanostele

Hi 97°, Lo 61°

[Axel Amsterdam]

Thank you both, from the original pictures it looks more similar to the pictures of espostoa melanostele. These seem to have slightly fatter coloms and more arms than potgrown cleistocactus strausii, but i am no expert. 

[Silas_Sancona]

33 minutes ago, Axel Amsterdam said:

Thank you both, from the original pictures it looks more similar to the pictures of espostoa melanostele. These seem to have slightly fatter coloms and more arms than potgrown cleistocactus strausii, but i am no expert. 

With two very similar- looking cacti, ..or any cactus really...  the best way to figure out who is who is to get as " close n' personal " with them as possible..  so you can note as many detailed  details as possible,  like spine / rib arrangement, ..and/ or flowers / fruit ( when X new to you < or anyone > cactus is observed flowering or w/ fruit on it )