Shichito matgrass; Cyperus malaccensis
A species of sedge used for weaving mats and other traditional crafts. The name refers to the Izu Islands (七島), where it was historically cultivated.
Shichito matgrass has been used as a material for tatami facing.
Katakana spelling, common in botanical contexts.
The name 七島藺 literally means 'seven-island rush', referring to the Izu Islands where it was traditionally grown.