On Rav, it's called "mitered scarf kal or ruth's creation" and found here.
If you haven't joined Ravelry, would you puleeze do it already. Pretty please. Pretty please with a miter on top!

Cathy - Thanks. Pick a pretty yarn and knit.
Dobarah - me too.
Anonymous - DragonYady is in reality a most ebil woman. Be careful around her. She makes me do the most outrageous things.
Jo - the Yady is a dangerous, ebil woman, and this is all her fault. I'm so perfect that it couldn't be my fault!