It’s a very pretty cactus called Austrocylindropuntia subulata f. cristata.

both of them are the same????

Yep, they’re a crested form of this cactus.

Austrocylindropuntia subulata

When they’re crested they’re like snowflakes, no two are alike:).

thank you so much.

dbarron, do you think Pereskia aculeata is succulent? Just playing devil‘s advocate.

Yes, yes, I do (and I thought of that too Macranthos).

Oh good. As long ad we’re on the same page ;-)

Pereskia are non succulent cactus.

To me, those leaves are succulent, just as much as Schlumbergera segments are. Both are jungle cactus. However, you are entitled to your opinion. Mine just differs and I can back it up. Pereskia is weird and maybe it shouldn't be a cactus :)