Black Eyed Susan

Rudbeckia hirta

Habitat: Tall Grass Prairie, Eastern Deciduous Forest

Seasons: Spring through fall

Active Chemical Ingredient

Sesquiterpene Lactones

https://en.wikipedia.org/wiki/Sesquiterpene-Lactones

Use of specimen: A poultice made from the cones is used to treat snake bites

Source: http://www.herbal-supplement-resource.com/black-eyed-susan.html