Ageratina altissima


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Related to Ageratina altissima: Eupatorium rugosum, white snakeroot
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Synonyms for Ageratina altissima

American herb having flat-topped clusters of small white flower heads

References in periodicals archive ?
Representative herbaceous plants include Ageratina altissima, white snakeroot; Galium aparine, bedstraw: Geum canadense, white avens; Poa pratensis, Kentucky bluegrass; Rudbeckia laciniata, cutleaf coneflower; and Viola sororia, sister violet--all common to abundant.
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.
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.
Species associated with woodlands, including Ageratina altissima (white snakeroot) and the woody vine Toxicodendron radicans (poison ivy) were dominant.
Many of the forbs occurring in this cemetery were woodland species, including Ageratina altissima, Campanulastrum americanum, Cryptotaenia canadensis, Geranium maculatum, Osmorhiza longistylis, Phryma leptostachya, Podophyllum peltatum and Symphyotrichum cordifolium (sagittifolium).