Robert W. Freckmann Herbarium


  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
(Glossary)

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

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

         
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