Asteraceae
Old Cahaba rosinweed
Silphium perplexum
- Family
- Asteraceae
- Genus
- Silphium
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Common names
By language (1)
- English
- Old Cahaba rosinweed
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: Brian Finzel, CC BY-SA 4.0, from iNaturalist 
Photo: Wikimedia Commons contributor, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Brandon Corder, CC BY 4.0, from iNaturalist 
Photo: sblumen, CC BY 4.0, from iNaturalist
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- Wholeleaf rosinweedSilphium integrifoliumAsteraceae
- Mohr's rosinweedSilphium mohriiAsteraceae
- Roughstem rosinweedSilphium radulaAsteraceae
- Prairie rosinweedSilphium terebinthinaceumAsteraceae
- Cumberland rosinweedSilphium brachiatumAsteraceae
- Appalachian rosinweedSilphium wasiotenseAsteraceae
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Sources: classification from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.