lithothamnion

noun
lith·o·tham·ni·on

Definition of lithothamnion 

1 capitalized : a genus of crustose reef-forming red algae (family Corallinaceae) that are abundant in post-Jurassic geologic strata and are represented by numerous recent forms growing chiefly on rocks and other algae

2 plural -s : any plant of the genus Lithothamnion

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History and Etymology for lithothamnion

New Latin, from lith- + Greek thamnos bush + -ion (diminutive suffix)

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