DCHP-1 Online
tripe de roche [< Cdn F] North 
an edible lichen of the genus, Umbilicaria (or, less often, the genus Gyrophora), having circular, leathery, grayto-brownish thalli found attached to certain rocks by a threadlike holdfast.
See also: rock-tripe
- 1665 (1885) [The kittle was full wth the scrapings of the rocks, wch soon after it boyled became like starch, black and clammie & easily to be swallowed.]
- 1768 (1901) I found a very high rock, and this was covered with a lichen, which the Chipeways call waac, and the Canadians, tripe de roche.
- 1836 (1947) A small box of Tripe de Roche is forwarded to your address.
- 1936 That is good when you journey to meet them, but when you are behind--then comes the misery of empty bellies and "tripe de roche."
- 1963 [They are] preparing a camp and gathering tripe de roche, main food of the starving men on the return journey.
- 1665 (1885) [The kittle was full wth the scrapings of the rocks, wch soon after it boyled became like starch, black and clammie & easily to be swallowed.]