Apiaceae
Cous biscuitroot
Lomatium cous
- Family
- Apiaceae
- Genus
- Lomatium
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Common names
By language (1)
- English
- Cous biscuitroot, Cous' biscuit-root, Cous-root desert-parsley
Synonyms
- Cogswellia circumdata (S.Watson) M.E.Jones
- Cogswellia cous (S.Watson) M.E.Jones
- Cogswellia montana M.E.Jones
- Lomatium circumdatum (S.Watson) J.M.Coult. & Rose
- Lomatium montanum J.M.Coult. & Rose
- Peucedanum circumdatum S.Watson
- Peucedanum cous S.Watson
- Peucedanum montanum (J.M.Coult. & Rose) Blank.
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
Photos

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: 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: 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: 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: 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 Lomatium
- Bradshaw's desertparsleyLomatium bradshawiiApiaceae
- California lomatiumLomatium californicumApiaceae
- Desert biscuitrootLomatium foeniculaceumApiaceae
- Gray's biscuitrootLomatium grayiApiaceae
- Barestem biscuitrootLomatium nudicauleApiaceae
- Utah desertparsleyLomatium parryiApiaceae
- Mariposa desertparsleyLomatium congdoniiApiaceae
- Agate desertparsleyLomatium cookiiApiaceae
- Fernleaf biscuitrootLomatium dissectumApiaceae
- Howell's biscuitrootLomatium howelliiApiaceae
- Shiny biscuitrootLomatium lucidumApiaceae
- Coastal biscuitrootLomatium parvifoliumApiaceae
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.