Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Amaranthus powellii S.Watson image
Photographer: Donald Pratt           

PNW Weed Management Handbook

PNW Weed Management Handbook
Family Amaranthaceae
Amaranthus powellii S.Watson
green amaranth, Powell's amaranth, Powell's smooth amaranth, tall amaranth
Amaranthus: from the Greek amarantos for "unfading," referring to the long-lasting flowers
powellii: after John Wesley Powell (1834-1902), famed explorer and runner of the Colorado River through the Grand Canyon.
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - naturalized
Plant: annual, up to 6' tall forb, freely branched forb hairless except in the inflorescence; stems with no spines and often with a reddish base
Flower: green, tiny, 3-5-parted; inflorescence dense, stiff, terminal, spike-like cluster usually unbranched or with a few, erect, widely-spaced branches
Leaf:alternate, ovate, underside smooth with whitish veins, stalk equal to or longer than the blade
Habitat: disturbed sites

More Information Natural Communities Herbarium Specimens
All Amaranthus list Google- Images or Text

Flora of North America (off site)
Amaranthus bouchonii Thell.
Amaranthus bracteosus Uline & W.L.Bray
Amaranthus retroflexus L. var. powellii (S.Watson) B.Boivin

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