white snakeroot

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Related to Ageratina altissima: Eupatorium rugosum, white snakeroot

white snakeroot,

North American woods perennial (Eupatorium urticifolium) of the family Asteraceae (asteraster
[Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants of the genus Aster, sometimes called wild asters, and for a related plant more correctly called China aster (Callistephus chinensis
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 family), having a flat-topped cluster of small white flowers. It is of the same genus as the bonesetboneset
or thoroughwort
, perennial North American herb (Eupatorium perfoliatum) of the family Asteraceae (aster family), having terminal clusters of small, chiefly white blossoms.
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 and joe-pye weedjoe-pye weed
, name for a tall North American plant (Eupatorium purpureum) of the family Asteraceae (aster family), having small, usually pinkish-purple blossoms in large terminal clusters.
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. The herbage contains tremetol, a toxic principle causing "milk sickness," or milk fever. White snakeroot is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Asterales, family Asteraceae.
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Familia Nombre cientifico Araliaceae Schefflera rodriguesiana Asteraceae Ageratina altissima Cirsium subcoriaceum No identificada Senecio sp.
Clewell and Wooten (1971) included "luciae-brauniae" in the geographically highly variable Ageratina altissima var.
petiolata metrics in both years and the cover of the five most abundant (highest total cover) herb species in the quadrats: Desmodium glutinosum, Circaea lutetiana, Geranium maculatum, Amphicarpaea bracteata, and Ageratina altissima. Herold et al.
x Agastache nepetoides (L.) Kuntze x Agastache scrophulariifolia x (Willd.) Kuntze Ageratina altissima (L.) R.M.
10.0 2.4 4 1.0 1.0 Poa pratensis 6.7 1.6 12 3.0 1.0 Amorpha canescens 6.7 1.6 -- -- -- Cornus drummondii 6.7 1.6 14 3.4 5.1 Chamaecrista fasciculata 3.3 0.8 -- -- -- Pycnanthemum tenuifolium 3.3 0.8 -- -- -- Bouteloua hirsuta 3.3 0.8 -- -- -- Solidago nemoralis 3.3 0.8 -- -- -- Prunus serotina 3.3 0.8 -- -- -- Toxicodendron radicans -- -- 48 11.8 23.4 Ageratina altissima -- -- 52 12.8 16.0 Carex pensylvanica -- -- 36 8.9 6.6 Carex sp.
Light, thermoperiod and light X thermoperiod interaction had significant (P = 0.0001) effects on germination of freshly matured achenes of Ageratina altissima. A significant interaction indicated that the effect of light on germination was strongly dependent on the [TABULAR DATA FOR TABLE 2 OMITTED] thermoperiod.
Common to abundant herbaceous species include Acalypha rhomboidea, Ageratina altissima, Angelica atropurpurea, Claytonia virginica, Cryptotaenia canadensis, Fallopia scandens, Floerkea proserpinacoides, Galiurn aparine, Geurn canadense, G.