Amaranth Family (Amaranthaceae) ⁴

Summary ⁵

Amaranthus retroflexus is a species of flowering plant in the Amaranthaceae family with several common names, including red-root amaranth,redroot pigweed,red-rooted pigweed,common amaranth,pigweed amaranth, and common tumbleweed.

Similar species ⁴

Similar weedy amaranths include Common waterhemp (Amaranthus tuberculatus) and Smooth pigweed (Amaranthus hybridus).

Learn more ⁴

Cornell Weed Identification, Cornell University.
Weed of the Month, Brooklyn Botanic Garden.
Weedy Pigweeds and Waterhemps of Iowa (Iowa State Extension).
Fire Effects Information, U.S. Forest Service.

Sources and Credits

1. (c) crazybirdy, some rights reserved (CC BY), uploaded by crazybirdy, https://www.inaturalist.org/observations/33220369
2. (c) AnRo0002, some rights reserved (CC BY), uploaded by AnRo0002, https://commons.wikimedia.org/wiki/File:20160813Amaranthus_retroflexus.jpg
3. (c) Шмелёва Аннa, some rights reserved (CC BY), uploaded by Шмелёва Аннa, https://www.inaturalist.org/observations/178684093
4. (c) Isaac Winkler, some rights reserved (CC BY-SA)
5. Adapted by Isaac Winkler from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Amaranthus_retroflexus

More Info

• iNat taxon page
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• eFloras.org
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• Global Biodiversity Information Facility (GBIF)
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• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
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• OregonFlora.org
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

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