rock tripe
noun
: any of various dark leathery umbilicate foliose lichens (as of the genus Umbilicaria) that are widely distributed on rocks in boreal and alpine areas and are sometimes used as food
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Pausing for a water break before beginning his descent, Menke ran his hand over another boulder and broke off a piece of crusty rock tripe, or lichen.
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Ben McGrath, The New Yorker, 28 Nov. 2022
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Ben McGrath, The New Yorker, 28 Nov. 2022
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“Rock tripe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock%20tripe. Accessed 30 Dec. 2024.
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