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College of Food, Agricultural, and Environmental Sciences


Smart Stuff with Twig Walkingstick: Dandy, Yes, But Not Before Bed (for the Week of April 15, 2007)

April 10, 2007

Q. Dear Twig: Why are dandelions called dandelions?

A. The name comes from the French word dentdelion. "Dentdelion" means "tooth of the lion," which has to do with the shape of the leaf. The edge of the leaf looks like it has teeth. Big, sharp, biting teeth as from, oh, say, a lion. Pick yourself a dandelion leaf, or lie on your belly and look at one closely, and you'll see how the plant gets its name.

The dandelion has other names, too. There's blowball, due to the round, fuzzy, golfball-like seedhead. Hold one up in front of your mouth, blow out a breath — foo! — and watch all the seeds float away. (And into your mom's garden. Oops!)

There's shepherd's clock, because the flowers open at dawn and close at dusk about the same time every day.

And then, no kidding, there's wet-the-bed, which in France, no kidding, is pissenlit ("pees-on-lee"). Dandelion leaves, the U.S. National Library of Medicine says, "have traditionally been used to increase urine production and excretion," though hopefully not with lions.


P.S. Other names for the dandelion are tell-time, fairy-clock, lion's tooth and dumble-dor.

Notes: Scientists call the "teeth" of the dandelion leaf "lobes." Know what a maple leaf looks like? A maple leaf has lobes, too, though not as many and not nearly as tooth-like. A Feb. 20, 2002, "Smart Stuff" column looked at eating, not just naming, dandelions. Find it at Sources included the University of Maryland Medical Center,; and the U.S. National Library of Medicine's Medline Plus Web site,

About this column: "Smart Stuff with Twig Walkingstick," a free public service of The Ohio State University College of Food, Agricultural, and Environmental Sciences - specifically, of the Ohio Agricultural Research and Development Center (OARDC) and Ohio State University Extension, both part of the College - is a weekly column for children about science, nature, farming and the environment. The reading level typically rates at grades 3.5-4.5. For details, to ask Twig a question, and/or to receive the column free by mail or e-mail, contact Kurt Knebusch, CommTech, OSU/OARDC,1680 Madison Ave., Wooster, OH 44691,, (330) 263-3776. Online at


Kurt Knebusch