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
[none provided]
Publication: Madroño. 13: 18. 1955.
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.
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.
USDA Plants: Amaranthus tuberculatus information.
