Amaranthaceae (Amaranth family)

Broadleaf plant family

In Missouri the amaranths (pigweeds) make up the vast majority of plant genera that occur within this family.

Amaranth, Palmer
Amaranthus palmerii
 

Pigweed, redroot
Amaranthus retroflexus
 

Pigweed, smooth
Amaranthus hybridus
 

Pigweed, tumble
Amaranthus albus
 

Waterhemp, common
Amaranthus rudis
 

For an idea of relative seed size, each photo contains a millimeter ruler. The distance between increments is 1 mm.