Japanese Knotweed

Fallopia japonica

Habitat: Tall Grass Prairie

Seasons: Late summer to winter

Active Chemical Ingredient

Rutin

https://en.wikipedia.org/wiki/Rutin

Use of specimen: Applied directly to the skin to help disinfect open wounds

Source: http://www.webmd.com/vitamins-supplements/ingredientmono-537-knotweed.aspx?activeingredientid=537&activeingredientname=knotweed