Scottish National Dictionary (1700–)
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First published 1976 (SND Vol. X, list of scientific terms with Scottish connections).
This entry has not been updated since then but may contain minor corrections and revisions.
RHYNIA. Bot. A genus of fossil vascular plants of the Devonian period, family Rhyniaceae (1917 R. Kidston and W. H. Lang Trans. Royal Soc. Edb. LI. 761).
[Found in the chert bed at Rhynie in Aberdeenshire.]