The bottom of it turned black due to rot or some infection. I had that part off with a knife, but the problem came back more than a week later (after I put it in a cactus mix with a bit of water). I had to take off the black part again. Here's what I got now, any advice? (Also, knowing the species would help. The thing is about the size of a coin, but it can get to the size of a small mammallaria cactus that you might see in Office Depot).

Cute little thing! When you cut the black rotted part off did you allow the cut end of the plant to sit out and dry/callous over before repotting?

I wouldn't have recognized that little cutie as Ananas/Pineapple; I've never seen a Pineapple with short, broad leaves like that; it reminds me more of Aloe. There is one Aloe with short, broad leaves that comes to mind and there are probably others.

Hopefully someone knowledgeable with cacti/succulent type plants will be along with advice and care suggestions for you.

For comparison, there are photos here of: Short Leaved Aloe (Aloe brevifolia)

And, here:
http://www.smgrowers.com/produ...
https://en.wikipedia.org/wiki/...

Thanks, Lin! I don't think I allowed it to dry up enough. I took out some more of it just to stay on the safe side, so now it's tinier. I'm a cactus/succulent fan myself. These pineapples are adorable and grow up to around softball size if I remember correctly. They are edible and smell amazing.

Just butting in to say it's really cute & I hope it takes root for you!

Oh, that is quite cute Hunter. Reminds me of another type of bromeliad.

Just try to callus that fleshy part some more, before you stick in your media. Keep us posted how it grows!