Apiaceae
Stiff cowbane
Oxypolis rigidior
- Family
- Apiaceae
- Genus
- Oxypolis
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Oxypolis rigidiorApiaceae
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Common names
By language (1)
- English
- Stiff cowbane
Synonyms
- Archemora ambigua DC.
- Archemora denticulata (Baldwin) DC.
- Archemora rigida var. ambigua (Nutt.) A.Gray
- Archemora rigidior (L.) DC.
- Archemora rigidior var. ambigua (Nutt.) A.Gray
- Archemora serrata Raf.
- Archemora tricuspidata DC.
- Archemora trifoliata Raf.
- Oenanthe ambigua Nutt.
- Oenanthe rigida Crantz
- Oxypolis denticulata (Baldwin) Raf.
- Oxypolis longifolia (Pursh) Small
- Oxypolis rigidior subsp. longifolia (Pursh) W.Stone
- Oxypolis rigidior var. ambigua B.L.Rob.
- Oxypolis rigidior var. longifolia (Pursh) Britton
- Oxypolis rigidior var. rigidior
- Oxypolis tricuspidata (Elliott) Raf.
- Oxypolis turgida Small
- Pastinaca ambigua Torr.
- Pastinaca denticulata (Baldwin) D.Dietr.
- Pastinaca rigidior (L.) Spreng.
- Pastinaca tricuspidata D.Dietr.
- Peucedanum rigidius (L.) Baill.
- Peucedanum rigidius Alph.Wood
- Peucedanum rigidius var. ambiguum (Nutt.) Alph.Wood
- Peucedanum rigidum var. ambiguum (Nutt.) Alph.Wood
- Sium denticulatum Baldwin
- Sium longifolium Pursh
- Sium rigidius L.
- Sium tricuspidatum Elliott
- Tiedemannia rigida var. ambigua J.M.Coult. & Rose
- Tiedemannia rigidior (L.) J.M.Coult. & Rose
- Tiedemannia rigidior var. ambigua (Nutt.) J.M.Coult. & Rose
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
More in Oxypolis
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.