Identification: Can you identify this plant?

I have one house plant that I can not identify. I have never seen one before, it is my husbands and he got it before we met, but he doesn't remember where it came from. I have searched and searched and can't find out anything about it, or anything remotely close to it. I have included some pictures and I hope somebody can help me! Thank you. KD

 

Hatiora salicornioides. A species of cactus.

 

Thank you so much, now I can figure out what to do with it!