Summary ²

Amaranthus spinosus, commonly known as the spiny amaranth, prickly amaranth or thorny amaranth. It is native to the tropical Americas, but it is present on most continents as an introduced species and sometimes a noxious weed. It can be a serious weed of rice cultivation in Asia....

Sources and Credits

1. (c) Forest & Kim Starr, some rights reserved (CC BY), https://www.biolib.cz/IMG/GAL/53937.jpg
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Amaranthus_spinosus

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