Apiaceae
Western sweetroot
Osmorhiza occidentalis
- Family
- Apiaceae
- Genus
- Osmorhiza
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Common names
By language (2)
- Arabic
- سرفيل بولانديري
- English
- Western sweetroot
Synonyms
- Glycosma ambiguum A.Gray
- Glycosma bolanderi (A.Gray) A.Gray
- Glycosma maxima Rydb.
- Glycosma occidentale Nutt.
- Myrrhis ambigua Greene
- Myrrhis bolanderi A.Gray
- Myrrhis occidentalis (Nutt. ex Torr. & A.Gray) Benth. & Hook.f.
- Osmorhiza ambigua J.M.Coult. & Rose
- Osmorhiza bolanderi Jeps.
- Osmorhiza occidentalis var. bolanderi (A.Gray) J.M.Coult. & Rose
- Washingtonia ambigua (A.Gray) J.M.Coult. & Rose
- Washingtonia bolanderi (A.Gray) J.M.Coult. & Rose
- Washingtonia occidentalis Kuntze
Flowers
- Flower colour
- yellow (USDA PLANTS Database)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
Toxicity: Moderate, as listed by the USDA PLANTS Database (2025-05-29). USDA rates how toxic a plant is to people or livestock; it is not a pet-safety rating, so ask a vet or poison line if a pet or child ate it.
Photos
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Walter Siegmund, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Thayne Tuason, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Thayne Tuason, CC BY-SA 4.0, from Wikimedia Commons
More in Osmorhiza
- SweetcicelyOsmorhiza berteroiApiaceae
- Clayton's sweetrootOsmorhiza claytoniiApiaceae
- Bluntseed sweetrootOsmorhiza depauperataApiaceae
- California sweetcicelyOsmorhiza brachypodaApiaceae
- Longstyle sweetrootOsmorhiza longistylisApiaceae
- Mexican sweetcicelyOsmorhiza mexicanaApiaceae
- Osmorhiza glabrataApiaceae
- Purple sweetrootOsmorhiza purpureaApiaceae
- Osmorhiza aristataApiaceae
- Osmorhiza geohintoniiApiaceae
- Osmorhiza bipatriataApiaceae
Sources: classification, synonyms 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.