Lupinus bicolor |
Lupinus odoratus |
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bicolor lupine, field lupine, Lindley's annual lupine, Lindley's lupine, lupine, miniature lupine, Montana lupine, small-flower lupine, two-color lupine, two-colour lupine |
Mohave lupine, Mojave lupine, Mojave royal lupine |
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Habit | Herbs, annual, 0.5–4 dm, pubescent. | Herbs, annual, 1–3 dm, usually glabrous, sometimes sparsely pubescent when young, rarely at anthesis, hairs less than 0.5 mm. |
Stems | ascending or erect, branched or unbranched. |
basally branched or unbranched. |
Leaves | cauline; petiole 1–7 cm; leaflets 5–8, blades 10–40 × 1–5 mm, adaxial surface glabrous or sparsely pubescent. |
basal; petiole 2–12 cm; leaflets 5–9, blades bright green, 8–24 × 3–10 mm, adaxial surface glabrous. |
Racemes | 4–20 cm; flowers usually in fewer than 5 whorls, sometimes spirally arranged. |
4–25 cm; flowers spirally arranged. |
Peduncles | 3–10 cm; bracts deciduous, 4–6 mm. |
hollow, 6–15 cm; bracts persistent, straight, 2–4 mm, tips sparsely ciliate. |
Pedicels | 1–3.5 mm. |
3–7 mm. |
Flowers | 4–10 mm; calyx abaxial lobe entire, 4–6 mm, adaxial lobe deeply cleft, 2–4 mm; corolla usually blue, rarely light blue, pink, or white, banner spot white, becoming magenta, upper keel margins usually ciliate near apex, rarely glabrous, sometimes blunt, banner longer than wide. |
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 | 1–3 × 0.3–0.6 cm, pubescent. |
1.5–2.5 cm, adaxial suture undulate and ciliate with long dense hairs, sides with a few short hairs becoming scaly on drying. |
Cotyledons | deciduous, petiolate. |
persistent, disclike, sessile. |
Seeds | 5–8. |
2–6, ridged. |
2n | = 48. |
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Lupinus bicolor |
Lupinus odoratus |
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Phenology | Flowering late winter–spring (Mar–Jun). | Flowering spring. |
Habitat | Open or disturbed areas. | Creosote bush scrub, Joshua tree woodland, sandy desert flats, open areas. |
Elevation | 0–1600 m. (0–5200 ft.) | 500–1600 m. (1600–5200 ft.) |
Distribution |
AZ; CA; OR; WA; BC; Mexico (Baja California, Baja California Sur, Sonora)
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AZ; CA; NV
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Discussion | Lupinus bicolor is naturalized in Arizona. The named subspecies and varieties do not conform to consistently recognizable geographical or morphological entities (D. B. Dunn 1955). Vigorous plants with larger flowers may be confused with L. nanus. In California, plants on the Outer North Coast Ranges may persist for two growing seasons. Lupinus bicolor (as L. polycarpus) has been reported from Alabama (A. R. Diamond 2016) and Michigan (E. G. Voss and A. A. Reznicek 2012). Lupinus micranthus Douglas (1829, not Gussone 1828) is an illegitimate name that pertains here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus | Fabaceae > subfam. Faboideae > Lupinus |
Sibling taxa | ||
Synonyms | L. bicolor subsp. marginatus, L. bicolor var. micranthus, L. bicolor subsp. microphyllus, L. bicolor var. microphyllus, L. bicolor subsp. pipersmithii, L. bicolor var. pipersmithii, L. bicolor var. rostratus, L. bicolor subsp. tridentatus, L. bicolor var. tridentatus, L. bicolor var. trifidus, L. bicolor subsp. umbellatus, L. bicolor var. umbellatus, L. congdonii, L. polycarpus | L. odoratus var. pilosellus |
Name authority | Lindley: Bot. Reg. 13: plate 1109. (1827) | A. Heller: Muhlenbergia 2: 71. (1905) |
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