What type of bromeliad has a flowering stalk that is flat and kind of shaped like a beaver's tail?

It has purple flowers when it was blooming. The stalk is still green. I was wondering if the stalk needs to be cut off or left alone? The leaves on the plant are thin and green like blades of grass, but obviously thicker.

What type of bromeliad has a flowering stalk that is flat and kind of shaped like a beaver's tail?
Never cut the flower stalk on any variety of bromeliad. Let it die of its own accord, then cut it back. The plant uses enormous energy to produce the flower stalk and will "reclaim" it from the spent stalk, if allowed to do so. Your plant will flower again much sooner if you'll let nature take its course.