I found this little guy lurking among other succulents in a greenhouse at my favorite nursery...this little arm fell off REALLY easily, very fragile. The flower is teenie tiny, maybe the diameter of my pinky fingernail. The stalk is rubbery smooth and the "thorns" are not spiky at all. Never seen it before. It's readily growing roots.

We have that one at the Botanical Garden where I work. Very delicate.

Ah, do you know what it is, exactly? Are you able to find out? Thanks!!!! :D

I'm pretty sure we have it as Huernia sp.

The body of it just looks so much like this: http://www.succulentguide.com/...
but without a pic of the flower I'm not confident...?

Also, the flower isn't stinky....does that make a difference in ID?

I have one almost the same. It's flower smells like oranges. The flower is larger on mine. Stalks look the same but it is larger than any Orgea I own. Name; Orbea schweinfurthii. I just got it last year and it hasn't flowered for me yet.

Ah yes! That's the one. Update on flower smell: As of yesterday, the flower changed smells from that subtle orange smell to a very stinky garbage/soured fruit smell!!! Yuck! My 6 year old asked, "Why do you like garbage flowers so much?" Cause they're so cool!!!