Wildflowers of the United States

Home Journal Family Index - All States Photo Albums News About Privacy

Mountain Goldenbanner, Mountain Thermopsis, False Lupin, Golden pea, Buckbean - Thermopsis montana


Family: Fabaceae - Pea family Genus Common Name: Goldenbanner Native Status: NativeDicot Perennial Herb
Thermopsis montana - Mountain Goldenbanner, Mountain Thermopsis, False Lupin, Golden pea, Buckbean. Thermopsis montana is one of 10 Thermopsis species in the United States, although some authorities include it in the very similar T. rhombifolia (Prairie Thermopsis.) T. montana is the more western of these two species, with Montana being the only state having both species.

Thermopsis gracilis is another similar species which is found in the same range in the western United States. Based on my research it may be a less common species, and may be more branching. Since I'm no expert, it is possible that this is T. gracilis rather than T. montana.

Found in:
AZ, CO, ID, MT, NM, NV, OR, UT, WA, WY

Leave comments on Thermopsis montana at this link.
Thermopsis montana

Distribution of Thermopsis montana in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 19 Aug 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.

Search Our Database: Enter any portion of the Scientific, Common Name, or both.
Scientific name:
Common name:

Example: Enter "lob" in the common name field and you'll get all our species that have "lobelia" in the common name, as well as "sharp-lobed hepatica".

Do a general Google search of the entire site:



Follow on Twitter
Follow USWildflowers on Twitter


Site: Adams County, ID Date: 2011-June-18Photographer: Gerald C. Williamson
Nikon D7000
Mountain Goldenbanner has a spike of fairly large (for a member of the Pea Family) yellow blossoms terminating the branches. The shap makes them quite recognizable as blossoms of Fabaceae.
Thermopsis montana

Site: Adams County, ID Date: 2011-June-18Photographer: Gerald C Williamson
Nikon D7000
Mountain Goldenbanner grows up to about 4 feet tall. The leaves are alternating, each with three oval to oblong leaflets.
Click on the photo for a larger image
Thermopsis montana

Site: Adams County, ID Date: 2011-June-18Photographer: Gerald C Williamson
Nikon D7000
It grows in meadows and along streams.
Click on the photo for a larger image
Thermopsis montana

References used for identification and information:

Commercial / Cookie Notice

Looking for Wildflowers for a specific state? Check here:



All content except USDA Plants Database map Copyright Gerald C. Williamson 2017
Photographs Copyright owned by the named photographer