ragweed

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ragweed,

any plant of the genus Ambrosia, coarse, weedy herbs belonging to 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), most of which are native to America. They have inconspicuous greenish flowers and soft subdivided leaves. Ragweeds are regarded as especially troublesome because their pollen is acknowledged as the primary cause of hay fever—especially the pollen of A. artemisiifolia (common ragweed) and A. trifida (great ragweed), the two most prevalent species in North America. The leaves of the common ragweed were formerly used as an astringent and hemostatic; they sometimes impart a bitter taste to milk if eaten by cattle. One variety (elatior) of this species has become widely naturalized in Europe. Ragweeds are 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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ragweed

ragweed

Common allergen. Goldenrod is often blamed because it blooms right next to ragweed, but goldenrod is actually the antidote! Ragweed is all green, sometimes greyish-silver-green. Has distinct finger-like leaves with erect seed-pod spikes. Although many are allergic to ragweed, it is used by others for conditions like nausea, intestinal cramps, menstrual cramps and stroke. (tea from leaves and root) Highly astringent (stops bleeding). Seeds could be used as porridge or cereal.
References in periodicals archive ?
Lepus alleni is poorly represented in areas dominated by creosote, saltbush, and other low-growing shrubs (<2 m) including triangle-leaf bursage.
Finally, one Baja bursage (Ambrosia bryantii) has characteristics that make it seem more like a cactus than a woody shrub.
These shrub species were Shockley's goldenhead (Acamptopappus shockleyi), white bursage (Ambrosia dumosa), shadscale (Atriplex confertifolia), Nevada ephedra (Ephedra nevadensis), winterfat (Krascheninnikovia lanata), range ratany (Krameria erecta), and creosote bush (Larrea tridentata).
Much of the native vegetation that pronghorn graze, such as dune bursage, mistletoe, and mesquite leaves, is vanishing at an accelerated pace, giving way to parched earth and shrub.