We planted some of these in the front yard this year and The KingofHearts told The Dormouse what they were, then promptly forgot the name. Her, not so much, though, so whenever he's telling someone what he planted this year, he always stops and says, "Hey kid, what's that plant I planted that I can't remember the name of?"

And The Dormouse pipes in, proud as a peacock, with "Runuculus."

Wikipedia tells us:

Ranunculus (pronounced /ræˈnʌŋkjʊləs/)[1] is a large genus of about 400 species of plants in the Ranunculaceae. It includes the buttercups, spearworts, water crowfoots and the lesser celandine (but not the greater celandine of the poppy family Papaveraceae).

It goes on further to explain:

The term sardonic (sardanios), "bitter or scornful laughter", is often cited as deriving from the name of the Sardinian plant Ranunculus sardous, known as either σαρδάνη (sardanē) or σαρδόνιον (sardonion). When eaten, it would cause the eater's face to contort in a look resembling scorn (generally followed by death). It might also be related to σαίρω (sairō) "I grin."

How did I get to my fourth decade not knowing this? What did people in caveman times do without the Internet to enrich their lives as such? I guess that's why people spent so much time writing on cave walls.