Prairie Lupine - Sierra Club BC
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Prairie Lupine

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Prairie Lupine

Lupinus lepidus 

Appearance

Also known as the dwarf lupine, the prairie lupine’s leaves are in the shape of the palm of a hand. Its seven to nine leaflets are green-grey in colour and covered with fine silky hairs. The flowers are in tall spikes, and coloured lavender to deep blue with white at the base of each flower. 

Range & Habitat

This lupine is found in dry grasslands, open ponderosa pine forests, arid basins and at low elevations in the Thompson and Okanagan valleys. 

Reciprocal relationships

This lupine has heavy seeds that do not travel very far. They are in bloom from June until August. The blooms ripen into seeds in the shape of a small pea pod, which bursts open when dry. Lupines have underground roots with nodules that can form symbiotic relationships with nitrogen-fixing bacteria. This means atmospheric nitrogen can be converted into nitrogen that plants can use to live.  

Although other lupines have been known to kill animals that eat the plant, this lupine is considered a good food source for cattle. Chipmunks have been known to eat the seed, and squirrels will eat the leaves and flowers. This lupine is unfortunately endangered, for a variety of reasons. One of which is colonial fire suppression. First Nations in the area have historically set fires to maintain the surrounding ecosystem. This allowed space for lupine to grow unimpeded by competing vegetation. 

status

COSEWIC: Endangered 
CDC: Red 

More information

If you belong to a First Nation with a story or piece of information not represented here and you would like to share more about this species, please email us at education@sierraclub.bc.ca.   

PHoto Credits

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