This pattern is available in English and in Japanese.

The yarn given in the pattern is a Japanese brand. Something like Rowan Kidsilk Haze would be comparable.

From the website:

This scarf is made of lace-weight mohair yarn. Lightness and Softness are the characteristics of mohair yarn. Light mohair scarves are usefull in the early spring or fall. They are not bulky in your bag.

The stitches are very simple openwork. Both side have the distinctive taste.