Lupinus polyphyllus Lindl. - Fabaceae - large-leaved lupine, garden lupin, Vielblättrige Lupine, Staudenlupine
Stout perennial herb, up to 1.50m tall, native to Northern America, naturalized and commonly cultivated as a garden plant elsewhere; leaves palmately compound, leaflets 9-17, lanceolate, acuminate, glabrous above, pubescent below; inflorescence very long, many flowered, corolla about 3 times as long as the calyx, blue, violet, rose or white; fruit compressed, black at maturity, densely pubescent.
The flower fragrance seems week bergamot-like with a peppery twist.
„It is commonly used in gardens for its attractiveness to bees, ability to improve poor sandy soils with their nitrogen fixing ability and flowers; numerous cultivars have been selected… Low alkaloidal or sweet cultivars of this lupine suitable for fodder crops have been bred.“
The flower volatiles are dominated by trans-β-ocimene and trans-β-farnesene, which together comprise over 50% of the fragrance. Minor constituents are sabinene, myrcene, limonene, linalool, α-copaene, β-cubebene and trans-α-bergamotene.
[Pollen advertisement: chemical contrasts between whole-flower and pollen odors., Dobson, H.E., Groth, I., Bergstrom, G., American Journal of Botany, 1996, 877-885]
Botanical Register, vol.13, t.1096 (1827) [M.Hart]
flowering Lupinus polyphyllus, CC BY-SA 3.0, Author: Andreas Kraska