title: Knotgrass
text: # Knotgrass
  
  Knotgrass or knot grass is the common name for several plants and a moth and may refer to:
  
  * Paspalum distichum, a species of grass
  * Polygonum, a genus of plants in the buckwheat family, more often known as knot weed
  * Acronicta rumicis, a moth of the family Noctuidae
  