I have a type of very short lily that operates like the tall mystery lilies. The folage that comes up in the spring has much wider leaves than the tall variety. The leaves die back just like the tall ones. However, the lily that comes up in early August is on a very short stem. Do you have any idea what the name of this plant is?
Varieties of Lycorus can vary in height. The heights average between 12-24 inches.
Here are some links with more information.