Washington lupin
Lupinus polyphyllus
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Botanical Description
Lupinus polyphyllus, the bigleaf or garden lupine, is a stout perennial herb of the family Fabaceae growing 0.5 to 1.5 m tall from a thick rootstock. The leaves are palmately compound with nine to seventeen radiating, lance-shaped leaflets on long stalks, giving a handsome fan-like appearance. The flowers are pea-like and densely arranged in tall, showy terminal racemes up to 60 cm long, typically blue to violet but ranging to pink and white in cultivated forms; they are followed by hairy pods that split to eject the seeds. It flowers in early to mid summer. Native to western North America, it is widely grown as a garden ornamental and has naturalised across Europe and elsewhere. The plant contains toxic quinolizidine alkaloids and is poisonous to livestock and humans.
Cultural & Historical Context
Traditional American Uses
The Salish used Lupinus polyphyllus as a tonic, and the Thompson are recorded as using the plant medicinally for an unspecified purpose (Moerman, 1998). Each use is documented from a single ethnographer and the specific indications are largely unspecified. The plant is toxic, containing quinolizidine alkaloids, and was handled with care in these traditions.
Chemistry & External Identifiers
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.