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rhynia

noun
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rhy·​nia | \ ˈrīnēə \

Definition of rhynia

1 capitalized : a genus (the type of the family Rhyniaceae) of small leafless dichotomously branching fossil plants with terminal sporangia, a primitive stele, and smooth branching rhizomes — compare horneophyton
2 plural -s : any plant or fossil of Rhynia or a closely related genus

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History and Etymology for rhynia

New Latin, from Rhynie, Scotland, where the fossil plant was discovered + -ia

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“Rhynia.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/rhynia. Accessed 18 January 2020.

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