It looks a bit like an Arum Lilly (they are a huge weed in some parts of this country) but I think there are lots of different types of lilly that look pretty similar to each other.
I'm pretty sure it's a Calla too, and the shape you caught is terrific. The more flower shots I take and look at, the more I gravitate to the unusual angles, shapes, colors, etc. In this season, it reminds me of the flying angel ornaments you see around. I love the cropping, background etc. Very nice composition.