Yep, Utah has a lotta cool geologic formations, volcanic activity locations, gemstones, U-Dig fossil sites, meteorites, geode beds, petrified wood, you name it. Also gas a very generous collecting policy for recreational rockhounders. Oh, forgot to mention ....Agate! Tons of it just lying on the su...

(I posted this not where it was supposed to be initially)
Anyone interested in this hobby?

No. Second is F.hystrix

That is often called Euphorbia acrurensis , supposedly E.abyssinica .
Ive seen it in gardens in southern Spain and France. I dont know what to make of the plant, because there is a lot of "supposedly" with it involved.

Probably fabrisii

Espostoa aka old lady. I think lanata.

anttisepp wrote: ↑Mon Aug 31, 2020 5:23 am Lophocereus schottii?

No. Pachycereus schotii would resemble a polaskia with weird spines, usually with 4 or 5 ribs. At this height the spines should also be extra long
https://davesgarden.com/guides/pf/showimage/181995/

Echinopsis pachanoi

A stenocereus.

Echinopsis(ex trichocereus) spachiana

The state of cultivation and the state in nature are 2 different things. E.grusonii, the golden barrel is near extinct due to habitat loss, but is among the most cultivated succulent plants. Peyote too- despite being very threatened, its very popular in SE asia and among druggies. Similar situation ...

thanks. a google image search shows similar cacti however multiple branches appear to sprout at base. does this spp. also grow branches mid stem? Im going to correct you there. https://eol.org/pages/5175555 Cacti rarely do underground branching, but most(especially columnar ones) do it on the stem,...

anttisepp wrote: ↑Wed Aug 26, 2020 3:02 pm Mb Weberbauerocereus johnsonii?

Its possible, but less likely. Reason is its spines should look much cleaner(no random longer ones)

Looking purely at the tip it reminds me of Espostoa guenteri. Other than that it could be a related Haageocereus or Weberbauerocereus, but far less likely. Either way, espotoa group/

Yes. Thats how most of them look w/out the cephalium.