The columnar question

[Glorioustache]

Hello everyone! I have been trying to identify these guys for quite some time unsuccessfully. Any ideas of which species they could be?

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[BryanT]

I think they are Trichocereus pasacana and Haageocereus acranthus.

[Download]

Pachycereus pringlei and Haageocereus acranthus. E pasacana is more stumpy than that at the seedling stage.

[BryanT]

I have quite a few T pasacana at different age stages, they started to shown columnar shape at about 3 1/2 years.
P pringlei mostly whitish to greyish-black spines, and their spines mostly about 2cm long.
T. pasacana has mostly amber, yellow-brown or dark-brown spines, their spines can grow much longer even when they are still young. They are quite slow grower compared with a lot of other Trichocereus.

P pringlei and T pasacana.jpg (91.43 KiB) Viewed 509 times

[Glorioustache]

Thanks a lot for the input guys. Upon further inspection I would agree with you with the third one being Haageocereus acranthus... I had that one as a possibility together wi H. versicolor and Weberbauerocereus winterianus but H. acranthus it is indeed. As for the other two I would say they are neither of the ones you both mentioned. I would say that very likely both are different species of Pilosocereus. It is not quite noticeable on the photos but the first one has a very blue body and the second one a slight blue tone as well. I am leaning toward P. flexibilispinus for the first one, the other one is quite a mistery still