Definition

Noun: 1. A North American perennial plant: A herbaceous plant native to eastern North America, characterized by clusters of small, fluffy white flowers that bloom in late summer and fall. 2. A toxic plant: A plant containing the toxin tremetol, which is poisonous to livestock such as cattle and horses. The poison can be passed through the milk of affected animals, causing "milk sickness" in humans who consume it.

Usage Examples

• Noun:
  • The forest understory was dotted with the white blooms of white snakeroot.
  • Farmers historically learned to clear white snakeroot from pastures to protect their herds.
  • Botanists study white snakeroot for its ecological role in native woodlands.

Advanced Usage

• Historical Context: The plant gained historical significance in the early 19th century, as it was later identified as the cause of milk sickness, a disease that could be fatal to humans. It is notably linked to the death of Abraham Lincoln's mother, Nancy Hanks Lincoln.
• In Toxicology: The term is used specifically in veterinary and agricultural contexts to discuss pasture management and livestock poisoning.

Variants and Related Words

• Scientific Name: (current classification). It was formerly classified under the genus (e.g., ).
• Richweed (n): A common alternative name for the same plant.
• White Sanicle (n): Another less common vernacular name.

Synonyms

• Richweed
• White sanicle
• Ageratina altissima (scientific)

Related Phrases and Terms

• Milk sickness (n): The human disease caused by ingesting toxins from white snakeroot, typically via contaminated milk or meat.
• Trembles (n): The disease in livestock, especially cattle, caused by grazing on white snakeroot.

Noun

1. American herb having flat-topped clusters of small white flower heads; reputedly a cause of trembles and milk sickness; sometimes placed in genus Eupatorium