Beginner Gardening: Unknown wild flower?, 1 by jjulio

jjulio wrote:
Now, here I am again, asking the experts to unravel this weird one, please.
This houseplant is quite weird. I have had it for YEARS and it always gives only one leaf at a time. Suddenly, a few days ago, for all our surprise, it put out the very first flower in all those years. It is not a prity plant and the flower is dull and unattractive. But, in love, we always look after it.
My wife and I have always been puzzled with it, and sure enough, know not its name. Can you kindly help?
Julio.