From Reliquary Arts:

“This stitch is no secret; you’ve probably come across it already. It’s called ‘Feather and Fan’, and it can be found in sweaters, skirts, and throws, among other things. There’s even a way to do it in crochet.

I thought I’d post this pattern regardless, because it’s one of my favorites so far. It’s perfect for beginners: easy to knit up, doesn’t take very long, and looks beautiful when finished. It especially makes a great gift for Mom or Gran-Gran.“