white snakeroot

A poisonous eastern North American plant (Ageratina altissima) in the composite family, having opposite, heart-shaped leaves and flat-topped clusters of small white flower heads.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun

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

Ageratina altissima, Eupatorium rugosum, white sanicle

Ageratina, genus Ageratina - annual to perennial herbs or shrubs of eastern United States and Central and South America

herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

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References in periodicals archive

Check for white flowers in the woods at this time of year; they could be white snakeroot, poisonous to livestock.

Poor Will's Countryside Almanack: middle and late summer of 2016

Flower gardeners around here may want to consider trumpet honeysuckle, New England aster, white snakeroot and some varieties of goldenrod, she advised.

Flight of the bees; Disappearance of bees is topic at Garden Club

Rob.; SYN: Eupatorium rugosum Houtt.; White Snakeroot; C = 2: BSUH 16582, 16583.

The vascular flora in three prairie cemeteries in Henry County, Indiana

Species associated with woodlands, including Ageratina altissima (white snakeroot) and the woody vine Toxicodendron radicans (poison ivy) were dominant.

Loss of Hulsebus Loess Hill Prairie, Henderson County, Illinois to woody plant invasion

White snakeroot (Ageratina altissima, formerly Eupatorium rugosum) killed Abraham Lincoln's mother, but not directly.

Plant scandals: author Amy Stewart reveals the mysterious inner lives of the "characters" growing in her garden

White snakeroot Ageratina altissima (L.) King &

Appendix 1

The herbaceous plants in this community include Carex spp., sedges; Elymus canadensis, Canada wild rye; Ageratina altissima, white snakeroot; Muhlenbergia spp., muhly grasses; Sanicula canadensis, Canada sanicle; and Viola sororia, sister violet.

Floristic records in the Platte and Loup River bottomlands of Platte County, Nebraska

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