What is it??

[blackvine]

Hey, all - a friend said this orchid was given to her, but she doesn't know what it is. I thought maybe a den, but then she described what I believe are pbulbs, not canes. Here is her description:

"The leaves are at the base, atop a bulbish thing that acts like a tank for water. Now their are shoots coming from the base, as the blooms that came from three heavy stems all fade and fall. What a mystery."

I'm pretty new, so I don't know. Do any of you? Thanks!