Rock tripe

Rock tripe is the common name for various lichens of the genus Umbilicaria that grow on rocks.^[1] They are widely distributed, including on bare rock in Antarctica, and throughout northern parts of North America such as New England and the Rocky Mountains. They are edible when properly prepared; soaking extensively and boiling with changes of water removes the bitterness and purgative properties.^[2][3] They have been used as a famine food in extreme cases when other food sources were unavailable, as by early American northern explorers.^[2]

Rock tripe
Umbilicaria hyperborea
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Umbilicariales
Family:	Umbilicariaceae
Genus:	Umbilicaria Hoffm. (1789)
Type species
Umbilicaria hyperborea (Ach.) Hoffm. (1796)

Umbilicaria esculenta is commonly used as a food in Asian cuisine and a restorative medicine in traditional Chinese medicine. ^{[citation needed]}

Species

• Umbilicaria ahtii Davydov (2024)^[4]
• Umbilicaria americana Poelt & T.H.Nash (1993)
• Umbilicaria angulata Tuck. (1848)
• Umbilicaria antarctica Frey & I.M.Lamb (1939)
• Umbilicaria aprina Nyl. (1869)
• Umbilicaria arctica (Ach.) Nyl. (1859)
• Umbilicaria bigleri Frey (1949)
• Umbilicaria crustulosa (Ach.) Lamy (1879)
• Umbilicaria cylindrica (L.) Delise (1830)
• Umbilicaria daliensis (J.C.Wei) Davydov, Peršoh & Rambold (2018)
• Umbilicaria decussata (Vill.) Zahlbr. (1932)
• Umbilicaria deusta (L.) Baumg. (1790)
• Umbilicaria dura McCune (2018)^[5] – North America
• Umbilicaria esculenta (Miyoshi) Minks (1900)
• Umbilicaria hirsuta (Sw. ex Westr.) Ach. (1794)
• Umbilicaria hispanica (Frey) Davydov, Peršoh & Rambold (2018)
• Umbilicaria hyperborea (Ach.) Hoffm. (1796)
• Umbilicaria iberica Sancho & Krzew. (2009)
• Umbilicaria isidiosa Krzew. (2009)
• Umbilicaria leiocarpa DC. (1805)
• Umbilicaria maculata Krzew., M.P.Martín & M.A.García (2009)
• Umbilicaria mammulata (Ach.) Tuck. (1848)
• Umbilicaria meizospora (Harm.) E.A.Davydov & D.Masson (2022)^[6] – Europe
• Umbilicaria muhlenbergii (Ach.) Tuck. (1845)
• Umbilicaria multistrata McCune (2018)^[5] – North America
• Umbilicaria murihikuana D.J.Galloway & Sancho (2005)
• Umbilicaria nodulospora McCune, Di Meglio & M.J.Curtis (2014)
• Umbilicaria nylanderiana (Zahlbr.) H.Magn. (1937)
• Umbilicaria orientalis Davydov (2020)^[7] – East Asia
• Umbilicaria phaea Tuck. (1869)
• Umbilicaria platyrhiza Davydov (2022)^[8]
• Umbilicaria polyphylla (L.) Baumg. (1790)
• Umbilicaria polyrrhiza (L.) Fr. (1825)
• Umbilicaria proboscidea (L.) Schrad. (1794)
• Umbilicaria propagulifera (Vain.) Lano (1950)
• Umbilicaria pulvinaria (Savicz) Frey (1931)
• Umbilicaria rhizinata (Frey & Poelt) Krzew. (2010)
• Umbilicaria rigida (Du Rietz) Frey (1931)
• Umbilicaria robusta (Llano) D.J.Galloway & Sancho (2005)
• Umbilicaria sinorientalis (J.C.Wei) Davydov, Peršoh & Rambold (2018)
• Umbilicaria spodochroa Ehrh. ex Hoffm. (1796)
• Umbilicaria subglabra (Nyl.) Harm. (1910)
• Umbilicaria torrefacta (Lightf.) Schrad. (1794)
• Umbilicaria vellea (L.) Ach. (1794)
• Umbilicaria virginis Schaer. (1842)
• Umbilicaria xizangensis (J.C.Wei & Y.M.Jiang) Davydov, Peršoh & Rambold (2018)

Gallery

• 
  Rock Tripe (seogi) with pine nuts
• 
  Lichens of the type eaten by John Franklin's men on their journey back from the Coppermine River
• 
  Kishū kumano iwatake tori ("Iwatake mushroom gathering at Kumano in Kishu") by Hiroshige II
• 
  Umbilicaria havaasii