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pigweed

The Columbia Encyclopedia, 6th ed. | 2011 | 381 words | Copyright

pigweed name for several weedy plants, particularly the common pigweed or lamb's-quarters of the family Chenopodiaceae ( goosefoot family), the rough pigweed, or green amaranth , of the related family Amaranthaceae ( amaranth family), and the winged pigweed, a tumbleweed . Pigweeds are classified in the division Magnoliophyta , class Magnoliopsida, order Caryophyllales.

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"pigweed." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

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