Umbilicaria esculenta is a lichen of the genus Umbilicaria that grows on rocks, also known as rock tripe. It can be found in East Asia including in China, Japan, and Korea. It is edible when properly prepared and has been used as a food source and medicine. It is called iwatake (kanji: 岩茸 or 石茸) in Japanese and seogi (hangul: 석이; hanja: 石耳; literally "stone ear" or "rock ear") or seogi beoseot (hangul: 석이버섯; literally "stone ear mushroom") in Korean. The species name is based on the earlier basionym Gyrophora esculenta.
- Moo-Sung Kim; Hong-Bum Cho (December 2007). "Melanogenesis Inhibitory Effects of Methanolic Extracts of Umbilicaria esculenta and Usnea longissima" (PDF). 45 (6). The Journal of Microbiology: 578–582.
|Wikimedia Commons has media related to Umbilicaria esculenta.|
- Umbilicaria esculenta, at IndexFungorum.org
- ZipCodeZoo Zipcodezoo.com
- Gyrophora esculenta, at IndexFungorum.org
- Japanese drawings showing the harvesting of U. esculenta at Nifty.com