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.
TWEEDIA. Bot. A genus of the Asclepiad family or milkweeds, found in Argentina (1839 W. J. Hooker in Bot. Mag. LXV. 3630), also called Oxypetalum.
[Called after James Tweedie (1775–1862), from Scotland, plant-collector in S. America.]