[sneyk-root, -root]
snakeroot, name for several plants, among them black snakeroot (see bugbane), button snakeroot or blazing star, senega snakeroot (see milkwort), and white snakeroot.
The related genus Eupatorium also contains plants called "snakeroot". Virginia Snakeroot (Aristolochia serpentaria) and Canadian Snakeroot (Asarum canadense'') are unrelated plants.

Snakeroot (Ageratina) is a genus of about 250–290  perennials and rounded shrubs from the Sunflower family (Asteraceae).

These plants grow mainly in the warmer regions of the Americas. However, some flourish in the cooler areas of the eastern United States. Two Mexican species have become a pest in parts of Australia and Taiwan. Ageratina used to belong to the genus Eupatorium, but it has been reclassified.


The inflorescence consists of multiple fluffy, red or pinkish-white capitula in clusters. These lack the typical ray flowers of the composites.

They have multiple, much-branched woody stems. The petioles are rather long. The leaves are triangular, serrate and opposite with a foul-smelling, musky scent.


  • Ageratina flourensifolia
  • Ageratina geminata
  • Ageratina gentryana
  • Ageratina glabrata
  • Ageratina glauca
  • Ageratina glischra
  • Ageratina gonzalezorum
  • Ageratina grashoffii
  • Ageratina gypsophila
  • Ageratina halbertiana
  • Ageratina havanensis
  • Ageratina helenae
  • Ageratina henzium
  • Ageratina herbacea
  • Ageratina heterophylla
  • Ageratina hyssopina
  • Ageratina irrasa
  • Ageratina isolepis
  • Ageratina jaliscensis
  • Ageratina jalpana
  • Ageratina jolotepecana
  • Ageratina josepaneroi
  • Ageratina jucunda
  • Ageratina kochiana
  • Ageratina lasia
  • Ageratina lasioneura
  • Ageratina leiocarpa
  • Ageratina lemmonii
  • Ageratina leptodictyon
  • Ageratina liebmannii
  • Ageratina ligustrina
  • Ageratina luciae-brauniae
  • Ageratina lucida
  • Ageratina macdonaldii
  • Ageratina macvaughii
  • Ageratina mairetiana
  • Ageratina malacolepis
  • Ageratina manantlana
  • Ageratina miahuatlana
  • Ageratina moorei
  • Ageratina muelleri
  • Ageratina neohintonorium
  • Ageratina nesomii
  • Ageratina oaxacana
  • Ageratina occidentalis
  • Ageratina oligocephala
  • Ageratina oreithales
  • Ageratina ovilla
  • Ageratina palmeri
  • Ageratina parayana
  • Ageratina paupercula
  • Ageratina pazcuarensis
  • Ageratina pendula
  • Ageratina pelotropha
  • Ageratina petiolaris
  • Ageratina photina
  • Ageratina pichinchensis
  • Ageratina potosina
  • Ageratina pringlei
  • Ageratina prunellifolia
  • Ageratina pseudochilca
  • Ageratina queretaroana
  • Ageratina ramireziorum
  • Ageratina ramonensis
  • Ageratina resiniflua
  • Ageratina rhomboidea
  • Ageratina riparia
  • Ageratina robinsoniana
  • Ageratina rothrockii
  • Ageratina rubicaulis
  • Ageratina salicifolia
  • Ageratina saltillensis
  • Ageratina sandersii
  • Ageratina scordonioides
  • Ageratina shastensis
  • Ageratina sousae
  • Ageratina stricta
  • Ageratina sundbergii
  • Ageratina thyrsiflora
  • Ageratina tomentella
  • Ageratina triangulata
  • Ageratina triniona
  • Ageratina venulosa
  • Ageratina vernalis
  • Ageratina viburnoides
  • Ageratina viejoana
  • Ageratina viscosissima
  • Ageratina warnockii
  • Ageratina wrightii
  • Ageratina yecorana
  • Ageratina zunilana
  • Toxic properties

    Milk from cows that have eaten snakeroot can cause illness if ingested because the milk becomes toxic.


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