This is a curly spider plant also known as, chlorophytum comosum, that is going through the flowering step. Unfortunately the flower does not last for a long time, mostly a day.
A great plant to have in your home as it purifies the air from many toxins, especially formaldehyde and carbon monoxide.
I mean who wouldn't want to have this natural air purifier at home. And if you take good care of it, it looks quite beautiful.
Pick up yourself one today.