Artificial intelligent assistant

Poterium

Poterium Bot.
  (pəʊˈtɪərɪəm)
  [L. potērium, a. Gr. ποτήριον drinking-cup, wine-cup; also, name of a shrub. (The mod. application is said in Treas. Bot. to refer to the use of the Salad Burnet in flavouring Cool tankard.)]
  A genus of herbaceous plants of family Rosaceæ; Salad Burnet.

1597 Gerarde Herbal iii. xxiii. 1148, I haue sowen the seede of Poterion in April which I receiued.., that grew in my garden two yeres togither, and after perished by some mischance. 1706 Phillips, Poterium,..a sort of Thistle. 1753 Chambers Cycl. Supp., Poterium, a word used by many for the prickly pimpernell.

Oxford English Dictionary

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