that is going to be one huge flower. congratulations

Stapeliad, not sure which one, will know better once the bloom opens, looks quite healthy.

Tip about the odor, some aren't all that bad smelling, just don't stick your nose in it!!

FYI: It's not a cactus at all actually, but rather it is a succulent.

That's the beautiful and huge flowered Stapelia gigantea

Thanks for the follow up comments. I am really dying for the thing to bloom! I had another one with a good-sized bud, the for some unexplained reason, it never finished maturing. This one is relatively large (it seems huge to me!) so I think it will bloom. I just keep waiting... it's getting colder here, so I hope that doesn't discourage it!

Very cool. Did it end up blooming for you?