Page authors: David Giblin, Don Knoke
Amaranthus tuberculatus
rough-fruited waterhemp, tall waterhemp
Specimens
Photos

Distribution: No specimens seen for Washington, but reported in Washington by the Flora of North America. Cosmopolitan weed found throughout North America.

Habitat: Moist or wet disturbed areas, particularly in association with agriculture or roadsides.

Flowers: April-June

Origin: Introduced from the Great Plains of the central United States

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Wind

Description:

[none provided]


Accepted Name:
Amaranthus tuberculatus (Moq.) J.D. Sauer
Publication: MadroƱo. 13: 18. 1955.

Synonyms & Misapplications:
Acnida altissima Riddell ex Moq.
Acnida altissima Riddell ex Moq. var. prostrata (Uline & W.L. Bray) Fernald
Acnida altissima Riddell ex Moq. var. subnuda (S. Watson) Fernald
Acnida concatenata (Moq.) Small
Acnida subnuda (S. Watson) Standl.
Acnida tamariscina (Nutt.) Alph. Wood
Acnida tamariscina (Nutt.) Alph. Wood var. concatenata (Moq.) Uline & W.L. Bray
Acnida tamariscina (Nutt.) Alph. Wood var. tuberculata (Moq.) Uline & W.L. Bray
Acnida tuberculata Moq.
Amaranthus ambigens Standl.
Amaranthus rudis J.D. Sauer [KZ99]
Amaranthus tamariscinus Nutt.
Additional Resources:

PNW Herbaria: Specimen records of Amaranthus tuberculatus in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Amaranthus tuberculatus checklist entry

OregonFlora: Amaranthus tuberculatus information

E-Flora BC: Amaranthus tuberculatus atlas page

CalPhotos: Amaranthus tuberculatus photos

3 photographs:
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