Silphium terebinthinaceum

Prairie dock, a reference photo
Photo: Frank Mayfield from Chicago area, USA · CC BY-SA 2.0 (licence)

Silphium terebinthinaceum is a member of the Asteraceae, a family that includes sunflowers, and is commonly referred to as prairie dock or prairie rosinweed. It is native to central and eastern North America. "Rosinweed" became one of the plant's common names due to the fact that upon injury, resin flows from the wound, giving the plant a sweet smell. Tea brewed from the roots of the prairie dock have a variety of medical applications in Native American culture. The smoke from this plant has also been used as a treatment for congestion and rheumatism.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Prairie dock being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Asterales
Family
Asteraceae
Species
Silphium terebinthinaceum

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