Rock tripe

Rock tripe
	Umbilicaria growing on a rock
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Family:	Umbilicariaceae
Genus:	Umbilicaria
Species
	Umbilicaria americana (Frosted rock tripe); Umbilicaria angulata; Umbilicaria aprina; Umbilicaria arctica; Umbilicaria caroliniana; Umbilicaria cinereorufescens; Umbilicaria crustulosa; Umbilicaria cylindrica; Umbilicaria decussata; Umbilicaria deusta; Umbilicaria esculenta; Umbilicaria havaasii; Umbilicaria hirsuta; Umbilicaria hyperborea (Blistered rock tripe); Umbilicaria krascheninnikovii (Salty rock tripe ); Umbilicaria lambii; Umbilicaria leiocarpa; Umbilicaria lyngei; Umbilicaria mammulata; Umbilicaria muehlenbergii; Umbilicaria nylanderiana; Umbilicaria phaea; Umbilicaria polyphylla; Umbilicaria polyrrhiza; Umbilicaria proboscidea; Umbilicaria rigida; Umbilicaria scholanderi; Umbilicaria terrefacta; Umbilicaria vellea (Alpine rock tripe); Umbilicaria virginis

Rock tripe is the common name for various lichens of the genus Umbilicaria that grow on rocks.[1] They can be found throughout northern parts of North America such as New England and the Rocky Mountains. They are edible when properly prepared and have been used as a famine food in extreme cases when other food sources were unavailable, as by early American northern explorers.

Umbilicaria esculenta is commonly used as a food in Asian cuisine and a restorative medicine in traditional Chinese medicine. It is called shi'er (石耳 "rock ear") in Chinese cuisine, iwatake (岩茸 "rock mushroom") in Japanese cuisine, and seogi (석이버섯) in Korean cuisine.

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

References

Smith HB, Dal Grande F, Muggia L, Keuler R, Divakar PK, Grewe F, Schmitt I, Lumbsch HT, Leavitt SD. (2020). "Metagenomic data reveal diverse fungal and algal communities associated with the lichen symbiosis". Symbiosis. doi:10.1007/s13199-020-00699-4.CS1 maint: uses authors parameter (link)

"Umbilicaria". Integrated Taxonomic Information System. Retrieved June 23, 2005.

External links

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[1] Smith HB, Dal Grande F, Muggia L, Keuler R, Divakar PK, Grewe F, Schmitt I, Lumbsch HT, Leavitt SD. (2020). "Metagenomic data reveal diverse fungal and algal communities associated with the lichen symbiosis". Symbiosis. doi:10.1007/s13199-020-00699-4.CS1 maint: uses authors parameter (link)