• WordNet 3.6
    • n snakeroot any of various North American plants of the genus Liatris having racemes or panicles of small discoid flower heads
    • n snakeroot a plant of the genus Sanicula having palmately compound leaves and unisexual flowers in panicled umbels followed by bristly fruit; reputed to have healing powers
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Webster's Revised Unabridged Dictionary
    • n Snakeroot (Bot) Any one of several plants of different genera and species, most of which are (or were formerly) reputed to be efficacious as remedies for the bites of serpents; also, the roots of any of these.☞ The Virginia snakeroot is Aristolochia Serpentaria; black snakeroot is Sanicula, esp. S. Marilandica, also Cimicifuga racemosa; Seneca snakeroot is Polygala Senega; button snakeroot is Liatris, also Eryngium; white snakeroot is Eupatorium ageratoides. The name is also applied to some others besides these.
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Century Dictionary and Cyclopedia
    • n snakeroot A name of numerous plants of different genera, whose root either has a snake-like appearance, or has sometimes been regarded as a remedy for snakes' bites, or both. Several have a medicinal value. Compare rattlesnake-master and rattlesnake-root.
    • n snakeroot The black cohosh, Cimicifuga racemosa. whose root is an officinal remedy used in chorea, and formerly for rheumatism.
    • n snakeroot A general name for the species of Liatris: so called from the button-shaped corms, or from the button-like heads of some species, and from their reputed remedial property. (See cut under Liatris.) L. spicata, also called gay-feather, is said to have diuretic and other properties.
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In literature:

The snakeroot and the quinine did noble work, and thenceforth her recovery was rapid.
"Rolf In The Woods" by Ernest Thompson Seton
How are catnip and hoarhound, snakeroot and tansy, selling to-day?
"After a Shadow, and Other Stories" by T. S. Arthur
Sometimes folks got black snakeroot from the woods, biled it, and gave the tea to sick folks; that was to clean off the stomach.
"Slave Narratives: A Folk History of Slavery in the United States From Interviews with Former Slaves" by Work Projects Administration
Black snakeroot Greenish-yellow Copses, open glades.
"Harper's Young People, June 8, 1880" by Various
Black snakeroot White racemes Deep woods; Maine, West.
"Harper's Young People, July 13, 1880" by Various
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
Old lady Field she make medicine with snakeroot and larkspur and marshroot and redroot.
"Slave Narratives: a Folk History of Slavery in the United States From Interviews with Former Slaves" by Work Projects Administration
"Forty Years in the Wilderness of Pills and Powders" by William A. Alcott
The flowering period of Seneca Snakeroot is from May to June.
"Ginseng and Other Medicinal Plants" by A. R. (Arthur Robert) Harding
Dixon also reported that the natives have a keen sense of smell, which they quicken by the use of snakeroot.
"Alaska" by Ella Higginson

In news:

Also called shrubby white boneset or Havana snakeroot, this shrubby plant may get up to 6' tall, covered in highly fragrant, fuzzy white blooms from fall through early winter.
Joe Pye weed , boneset, snakeroot.