The pattern I have calls this the Sidewalk Shawl. I used a JoAnn's pattern pamphlet but it's on Ravelry too. I've also seen versions called pineapple shawls or pinecone shawls.
I'm not terribly fond of the flat bottom but by the time I had gotten the hang of the pattern to start a a point I was about halfway done with it and didn't see that frogging would have been worth it. However, the really long fringe makes up for that one little gripe. It feels like the fringe is half the weight of the shawl.
Yarn is Plymouth Yarn Encore
in #0520 (I call it charcoal).