It is called Shell Chain, and as you can see each link contains a small Chain Stitch and a larger Open Chain Stitch.
When I was leafing through this book
The author, Madam Totsuka, has not given it a name, just refers to it as a combination of 'Chain Darning and Open Chain Stitch'. I guess Chain Darning is her way of saying Twisted Chain, and her Open Chain is rather triangular in shape.
Have you seen this stitch before, do you know its official name? If you do, let me know in the Comments below. For the time being I will call it 'Twisted Shell Chain Stitch'.
I think Twisted Shell Chain Stitch makes an interesting bulky line, and I can tell you that it is both easy and fun to stitch.
These pictures will show you how to stitch it:
- Aida sampler
- SSS Reference Chart
- Make a line around this rectangular linen cloth.