Silphium radula, commonly known as roughstem rosinweed, is a species of flowering plant in the family Asteraceae. It is native North America, where it is found in the South Central region of the United States. Its natural habitat is prairies over sandy or calcareous soil.
From Wikipedia, under CC BY-SA 4.0.
Is it poisonous?
We have no record of Roughstem rosinweed 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
- Silphium integrifolium
- Helianthus mollis
- Silphium asteriscus
- Silphium asperrimum
- Silphium gracile
- Silphium glutinosum
Classification
- Kingdom
- Plantae
- Phylum
- Tracheophyta
- Class
- Magnoliopsida
- Order
- Asterales
- Family
- Asteraceae
- Genus
- Silphium
- Species
- Silphium radula
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