The poisonous compound it contains is tremetol, according to the University of Illinois at Urbana-Champaign. Snakeroot poisoning, illness in humans and grazing animals caused by trematol, a poisonous alcohol present in white snakeroot (Ageratina altissima), a plant found in North America. I’m pretty sure that plant is White Snakeroot.Barbara commented on my blog, I live in Wisconsin and it is blooming all over the woods right now. White Snakeroot causes "Milk Sickness." Poisonous white snakeroot remains green after pastures become dry and shoijt . How white snakeroot arrived in my stale and barren backyard, I’ll never know. It can form dense stands. Bloom Season. White snakeroot is one root you do not want to eat. Ageratina altissima (L.) R.M. Snakeroot is a common plant that grows in almost (if not all) counties in Illinois. altissima – white snakeroot Subordinate Taxa. The poison from the plant passed all the way through unscathed and caused her to get Milk Sickness. But it’s growing there now, beautifully and vigorously. Full sun to partial shade; consistently moist to wet sites. This section is from the book "Illinois Wild Flowers", by John Voss, Virginia S. Eifert. The small, pretty, white flowers of White Snakeroot start to appear in late summer and continue to bloom into the fall until the first hard frost. ; _ . White Snakeroot is that infamous plant that ultimately killed Abraham Lincoln's mother. When grazing is scarce, cattle may feed on snakeroot and develop a syndrome called trembles. Clusters of white flowers in late summer. Its button-like clusters of tiny tubular flowers offer nectar to a variety of potential pollinators, and flower buds and leaves provide food for other insect diners. lush , says Dr . White snakeroot starts to emerge in the spring. White snakeroots are perennial plants, found in the eastern parts of Canada and the United States, in North America. Eventually, a frontier doctor in Illinois named Anna Pierce Hobbs Bixby learned of the cause of the sickness from a Shawnee medicine woman. The Amazon Book Review Book recommendations, author interviews, editors' picks, and more. White snakeroot is a native plant that is responsible for killing thousands of people in the Midwest and eastern United States in the 18th and 19th centuries. "Snakeroot" is a term also applied to the unrelated white snakeroot (Ageratina altissima), rattlesnake root (genus Prenanthes), Canadian blacksnakeroot (Sanicula canadensis), black snakeroot (Actaea racemose), and Sampson’s snakeroot (Orbexilum pedunculatum).USDA 2016. White Snakeroot. Also available from Amazon: Fieldbook of Illinois Wild Flowers. Bloom Color. Nancy Lincoln lay ill in the earth-floored cabin in Kentucky, and no one knew what to do about it. Link ,. This plant can thrive in varied environments, according to the Illinois … var. Illinois snakes are a collecton of contradictions. Milk sickness occurs as a result of consuming milk or meat products from animals that have been eating white snakeroot. I guess this seed was dropped by a bird into the garden and the plant was blooming before I noticed it. The stem is branched near the top. White snakeroot plant. The leaves are dark green, 2.5-7 in. King & H. Rob. On the other hand, that diversity is a bit misleading because Illinois also lists populations of eleven species as either threatened or endangered. In addition, the leaves of white snakeroot are … White snakeroot poisoning (Circular / University of Illinois) Unknown Binding – January 1, 1935 by Robert Graham (Author) See all formats and editions Hide other formats and editions. University of Illinois veterinarian . Exposure. Related Links. White snakeroot (Ageratina altissima)* has an interesting toxicology. 2-4 Feet Native To: Illinois Indiana Iowa Michigan Missouri Ohio Wisconsin . 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