3世紀頃に中国で栄えた、蜀国の首都を流れていた川の名を冠した割付文様。流域で織られていた赤い地色の錦「蜀江錦」に、原型となる文様が使われていたことから、この名が付けられたと考えられています。

Shokkou was name of the river that flows through the capital of Shoku, which prospered in China around the 3rd century.
The patterns found in the area was called Shokkou.
Combination of octagon and square.

Obi fabrics with this Japanese pattern from the obico selection