Have you ever seen the flower because it’s hard to say without one?

Like Kara said, you can't say much without a flower but it does look a lot like a Huernia stem and the flower description chimes more with Huernia as well.

Don't know the ID, but am surprised to see your plant soaking wet. I'd try not to get water in the center of the plant. Are you washing the whole plant? May I pls ask why? Don't think that's a good idea, it's cold. Cold & wet are not friends of succulents, esp going into Winter. Generally one advises to water the soil, not the plant.

Haven’t seen the flower yet, but will post a picture if I do

Karen , I was repotting it because the soil it came in was peaty and really soggy, so I repotted it after cleaning it’s done the roots off with warm water. It’s indoors on a heat mat so hopefully it survives and grows well :)

Here is a picture of the two of them repotted:

Looks like (based on stem size / growth pattern, but really more than a bit of a WAG) Orbea melanantha. Impossible to say for sure until it flowers, but the stem size is a bit of a clue.

Thx for answering & explaining abt washing the plant.

Brendan, You have very small hands or that's the larges stapelia / Orbea I have ever seen. I know some Orbea does get large stems but this really looks large. Can't wait to see it flower.

Jeff, looked up your suggestion. That's a nice one as well. Might be the same. Makes me almost want to get back into these.

Stush, this one does get enormous stems when I had it PIG'd. They're the orchids of the succulent world - enter at your own risk.

Stush, I agree, I’ve never seen stems so big and I liked how they almost look fake or like something out of the flinstones. Luckily they weren’t expensive at all, so that’s why I decided to try them in the Hydroton. Hopefully I’ll see them flower :)

I entered at my own risk and got throw out. Luckily with some pride left.

Brenda, I got a stem cutting of Orbea schweinfurthii from 'denniso' way back in 2014. It had the very large stems like yours. However in my care, they reverted back to regular size. Must be the hot climate that makes all the difference.

Stush, I'm starting to feel the same way with my stapelias.

It seems they either rot, or grow a lot, and then rot. Before I see the flowers usually.

I've tried very little water, lots of water, I even left some in my basement unpotted and forgot about them. No luck ;)

I'll keep you posted on if this larger stem flowers. Did you ever see the flowers on your Orbea schweinfurthii? The couple I just grow lots of arms and then die usually.

Kara, those are beautiful photos. I hope I can see some flowers like this some day! I think the lighter color might be from keeping it outside? Not sure on this type, I know most usually darken outside, but this one I have looks like the same stem structure and size as yours but a bit darker green. The grower had them inside a greenhouse and the temp had to be well above 100 degrees F. She had a giant wood stove heater and an electric heater running and this plant was in swamp-like soil that she said she watered every other day.

Brenda, Can't say if it did. I do best indoors then when I bring them out in late spring, too much rain and lows in the 50's makes them rot easy.

Makes me try to get my greenhouse built.

Kara that is a magnificent looking stapelid flower. Don't think I've ever seen a photo of one in such a clear color before. I see it has attracted it's preferred pollinator in that 2nd photo. LOL

stush and Brendan...As for rot, so-far, I haven't seen any. The first stapelia I got last May was in regular potting soil and is still in it. Watered regularly all Summer and occasionally this winter. It sits on a window ledge where temp goes below 10C most every night, and it is still showing continuing slight growth. Cuttings of S. gigantea and S grandiflora received in September and placed in 1/1 potting soil/perlite in the same window all have rooted and 2 have put on new branch growth even at those temps. Maybe I'm headed for a fall, but up to now they look to be thriving in these conditions. I haven't had any long enough to get blooms but I'm putting big hopes on this coming year.

Maybe I should clean up what I mean. I still have most of my Asclepiads. I lost maybe 20 % total. Those it seems need much more care that I can not offer them. I have a lot that thrive for me. S. gigantea and S grandiflora are two of them. If I can set up the proper care area with bottom heat mat I might be able to care for the others. I have over a thousand plants and shifted care to agaves and aloes and sansereria. I gave away some that was too much for me to care for.

I made a post a long time ago 'Living with a Huernia' showcasing most of my collection.