Fig 55. [Prostrate Amaranth. Amaranthus blitoides] S. Wats.
![[Prostrate Amaranth. Amaranthus blitoides]](#1525880611323293367_fig-055.jpg.id-1655140176947995311.wrap-0.html.html){kind=link}
Prostrate Amaranth. Amaranthus blitoides S. Wats. Seeds smooth, highly polished, jet-black, double convex, nearly circular, with a slight notch at one edge, 1.4–1.5 mm. in diameter. Introduced from west of the Rocky Mountains. It thrives on sandy and gravelly banks. Margin of this seed is less pronounced than in either of the other three noticed above. Found almost everywhere in fields of Michigan. Introduced from tropical America. Very common in annual hoed crops.
Fig 56. [Tumble weed. Amaranthus graecizans] L.
![[Tumble weed. Amaranthus graecizans]](#1525880611323293367_fig-056.jpg.id-6911860669685445101.wrap-0.html.html){kind=link}
Tumble weed. Amaranthus graecizans L. Seeds smooth, highly polished, jet-black, double convex, nearly circular with a slight notch at one edge, .7–1 mm. in diameter. Compare with Acnida. Introduced from tropical America. It needs sand or gravel.
Fig 57. [Slender Pigweed. Amaranthus hybridus] L. (A. chlorostachys).
![[Slender Pigweed. Amaranthus hybridus]](#1525880611323293367_fig-057.jpg.id-4897493439791261104.wrap-0.html.html){kind=link}