This is a picture of a perennial sow thistle. It represents a method of seed dispersal. Seed dispersal is the way seeds move away from their parent plant so that they can begin to grow. Methods of seed dispersal fall into two categories: Autochory and Allochory. Autochory is the type of dispersal that does not require any help from outside forces, including natural ones. Allochory is the type of dispersal that does use outside forces such as animals, water, and wind. The plant pictured is an allochorous plant, since it uses the wind to disperse its seeds in a very similar way to dandelions.