UW Burke Herbarium species comparison

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Amaranthus hybridus

Amaranthus tuberculatus

green amaranth, hybrid amaranth, smooth amaranth, green pigweed, smooth pigweed

rough-fruited waterhemp, tall waterhemp

Amaranthus hybridus

Amaranthus tuberculatus
Flowering time July-October April-June
Habitat Fields, roadsides, wastelots, and other disturbed areas. Moist or wet disturbed areas, particularly in association with agriculture or roadsides.
Distribution
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
No specimens seen for Washington, but reported in Washington by the Flora of North America. Cosmopolitan weed found throughout North America.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from eastern North America Introduced from the Great Plains of the central United States
Conservation status Not of concern Not of concern
Sibling taxa
A. albus, A. blitoides, A. blitum, A. californicus, A. caudatus, A. cruentus, A. deflexus, A. hypochondriacus, A. powellii, A. retroflexus, A. tuberculatus
A. albus, A. blitoides, A. blitum, A. californicus, A. caudatus, A. cruentus, A. deflexus, A. hybridus, A. hypochondriacus, A. powellii, A. retroflexus
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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