Juncus wallichianus

Juncus wallichianus, Wallich's rush, is a species of flowering plant in the family Juncaceae. It is native to the Indian Subcontinent, mainland Southeast Asia, Sumatra, Java, New Guinea, central and eastern China, Hainan, Taiwan, Korea, Japan, the Ryukyu Islands, and Primorsky Krai and Sakhalin in Russia, and it has been introduced to Mauritius. A densely tufted perennial 25 to 40 cm tall, it is typically found in wet areas. Its chromosome count is 2n=80. It was used for paper making.