Yucca plant. http://www.pbase.com/pstubley/image/91907579 shows what the poor thing looks like buried in snow -- this is what it looks like when it flowers. It gets very exuberant. Of course, it will still be some months before I see it like this again, since it is completely buried now (January's photo, where the leaves stick out from the snow, was "the good old days").