Difference between revisions of "Lupinus odoratus"
Muhlenbergia 2: 71. 1905.
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Latest revision as of 18:56, 12 March 2025
Herbs, annual, 1–3 dm, usually glabrous, sometimes sparsely pubescent when young, rarely at anthesis, hairs less than 0.5 mm. Cotyledons persistent, disclike, sessile. Stems basally branched or unbranched. Leaves basal; petiole 2–12 cm; leaflets 5–9, blades bright green, 8–24 × 3–10 mm, adaxial surface glabrous. Peduncles hollow, 6–15 cm; bracts persistent, straight, 2–4 mm, tips sparsely ciliate. Racemes 4–25 cm; flowers spirally arranged. Pedicels 3–7 mm. Flowers 7–10 mm; calyx lobes sometimes ciliate at tips, abaxial lobe entire, 4–5 mm, adaxial lobe rounded or shallowly 2-toothed, 3–3.5 mm; corolla deep blue-purple, banner spot white or yellow becoming magenta, keel glabrous. Legumes 1.5–2.5 cm, adaxial suture undulate and ciliate with long dense hairs, sides with a few short hairs becoming scaly on drying. Seeds 2–6, ridged.
Phenology: Flowering spring.
Habitat: Creosote bush scrub, Joshua tree woodland, sandy desert flats, open areas.
Elevation: 500–1600 m.
Distribution
Ariz., Calif., Nev.
Discussion
The fresh flowers of Lupinus odoratus smell like violets. Pilose plants can be confused with L. flavoculatus.
Lupinus odoratus occurs in the Mojave Desert region of California, northward to Inyo and Mono counties, and eastward into southern Nevada and Mohave County, Arizona.
The name Lupinus odoratus A. Heller is to be proposed for conservation against L. odoratus F. Dietrich (1836), a likely synonym of L. nanus.
Selected References
None.