I think Danita has it although it can't be said which named hybrid it is for certain it does look like Crinum Menehune. My first impression was Crinum, the stems are much like C. procerum 'Splendens' of which Crinum 'Menehune' is a cross with C. oliganthum.
Crinum oliganthum does have pleated leaves ...
http://www.pacificbulbsociety....
I've had two Crinum procerum Splendens, one from Thailand and the other from South Africa which was originally from Hawaii. They grew a little, then died when it was too cold for them in the greenhouse over winter and I couldn't keep them inside.
