I wonder if it's the same Euphorbia I bought in February. It's hard to tell because the pic isn't close:).

Euphorbia pseudocactus subsp. lyttnoiana

Feb. 2017

Tonight sorry for the bad lighting. I didn't realize how fast it's grown until now;). The other little green nub is just a Rebutia propagation;).

The regular version of this Euphorbia has thorns and is bigger. The one above is more slender and is missing the woody thorns.

Here's the normal Euphorbia pseudocactus:). Which is just as beautiful;).

I'll try to get a closer pix later but this euphorbia is 4 sided...a square stalk. I got it from plant swap at our club.