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Colysis elliptica

Colysis elliptica

Colysis elliptica

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"Iwa-hitode" (Colysis elliptica) belongs to the family Polypodiaceae. It is an evergreen perennial herb that is widely distributed from the Izu Peninsula of Honshu westward to Shikoku, Kyushu in Japan, Taiwan, the Korean Peninsula, China, and Southeast Asia. It grows in mountainous areas along rather moist mountain streams. The leaves are about 50 cm long and have 3 to 5 pairs of pinnae. The sori are linear. In Taiwanese Chinese, it is called "žñš¢ü˜n", and in Chinese, it is called "ü˜n". 
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Shu Suehiro
shu@botanic.jp