Thermopsis montana Nutt.
Mountain Goldenbanner, Montane Golden-banner, Golden Pea, Buckbean
Fabaceae (Pea Family)
USDA Symbol: THMO6
This perennialís slender, 16-32 in. stems, purplish with a white coating, are slightly branched above and bear three-parted leaves. Yellow, lupine-like flowers occur in dense to interrupted clusters 4-12 in. long. Flowers are followed by velvety pods. A number of varieties are separated largely on the amount of pubescence present on the foliage. A plant with one or several hollow stems, slightly or not at all hairy, and yellow "pea flowers" in long racemes in upper leaf axils.
This genus resembles the Lupines, but Thermopsis has only 3 leaflets on each leaf; Lupinus has more. Yellow Peas, while handsome plants, are suspected of being poisonous. Among the several western species, some quite hairy, Prairie Thermopsis (T. rhombifolia), which grows on the eastern slopes of the Rocky Mountains and on the northwestern plains, has pods that spread outward from the curve or coil.
From the Image Gallery
Bloom InformationBloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug
DistributionUSA: AZ , CO , ID , MT , NM , NV , OR , UT , WA , WY
Native Distribution: B.C. to n. CA, e. to the Rockies of MT & CO
Native Habitat: Well-drained, stony or sandy flats
Growing ConditionsLight Requirement: Sun
Soil Description: Dry to wet, rocky or sandy soils.
PropagationDescription: This plant is best propagated by seeds.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Seed Network - Corvallis, OR
BibliographyBibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.
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Additional resourcesUSDA: Find Thermopsis montana in USDA Plants
FNA: Find Thermopsis montana in the Flora of North America (if available)
Google: Search Google for Thermopsis montana
MetadataRecord Modified: 2010-05-01
Research By: TWC Staff