Mamm 1 - maybe M. bocasana Rebutia 1 - maybe R. senilis There are no Espostoa (a columnar S. American cactus) in the photos. Others will know the Mamms more than I.

Okay! Thanks for your input. I just couldn't find one that looked close enough to this species so I just wanted to make sure. And actually this picture was after I cut off the bad parts.The stem was pretty much broken off so I just cut off the gross gooey parts. The rotted parts were turning black and have some white fuzz (mold?) on it. I was too grossed out to remember to take a picture xD Do you think it's too small to make it? My friend was about to throw it out and I wanted to try and save it :o

Also, they look etiolated, meaning the new growth is stretched from lack of proper lighting. These should get the brightest lighting you can find, a south window is ideal. Christopher

I agree with Stefan. The real E. chamaecereus has shorter stems. It will be interesting to see what the flowers will look like.