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NPIN: Native Plant Database

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Thermopsis montana (Mountain goldenbanner)
Bransford, W.D. and Dolphia

Thermopsis montana

Thermopsis montana Nutt.

Mountain goldenbanner, Montane golden-banner, Golden pea, Buckbean

Fabaceae (Pea Family)

Synonym(s):

USDA Symbol: THMO6

USDA Native Status: L48 (N)

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.

 

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit:
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug

Distribution

USA: 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 Conditions

Light Requirement: Sun
Soil Description: Dry to wet, rocky or sandy soils.

Propagation

Description: 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

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FAC FAC
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Seed Network - Corvallis, OR

Bibliography

Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.

Search More Titles in Bibliography

Additional resources

USDA: Find Thermopsis montana in USDA Plants
FNA: Find Thermopsis montana in the Flora of North America (if available)
Google: Search Google for Thermopsis montana

Metadata

Record Modified: 2010-05-01
Research By: TWC Staff

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