Lupinus bicolor |
Lupinus elatus |
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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 |
silky lupine, tall silky lupine |
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Habit | Herbs, annual, 0.5–4 dm, pubescent. | Herbs, perennial, 5–9 dm, silvery-woolly to -silky. |
Stems | ascending or erect, branched or unbranched. |
ascending or erect, clustered, branched, short-silky. |
Leaves | cauline; petiole 1–7 cm; leaflets 5–8, blades 10–40 × 1–5 mm, adaxial surface glabrous or sparsely pubescent. |
cauline; stipules not leaflike, green to silvery, 5–17 mm; petiole 2–5 cm; leaflets 6–8, blades 20–80 × 2–7 mm, widest below middle, adaxial surface pubescent, hairs densely silver-silky to woolly. |
Racemes | 4–20 cm; flowers usually in fewer than 5 whorls, sometimes spirally arranged. |
5–40 cm; flowers ± whorled. |
Peduncles | 3–10 cm; bracts deciduous, 4–6 mm. |
2–8 cm; bracts deciduous, 6–11 mm. |
Pedicels | 1–3.5 mm. |
2–4 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. |
10–14 mm; calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 6–8 mm, adaxial lobe notched, 5–7 mm; corolla lavender to blue, banner patch pale yellowish, banner usually glabrous abaxially, keel upcurved, glabrous, banner ovate, wings wide, covering keel tip. |
Legumes | 1–3 × 0.3–0.6 cm, pubescent. |
2–3 cm, pubescent. |
Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
Seeds | 5–8. |
4–6, mottled olive brown, 5–6 mm. |
2n | = 48. |
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Lupinus bicolor |
Lupinus elatus |
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Phenology | Flowering late winter–spring (Mar–Jun). | Flowering Jun–Aug. |
Habitat | Open or disturbed areas. | Dry conifer forests. |
Elevation | 0–1600 m. (0–5200 ft.) | 1500–3000 m. (4900–9800 ft.) |
Distribution |
AZ; CA; OR; WA; BC; Mexico (Baja California, Baja California Sur, Sonora)
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CA
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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.) |
Lupinus elatus is found at high elevations in the southern Sierra Nevada and Transverse Ranges. It closely resembles L. adsurgens and L. andersonii. (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. albicaulis var. elatus, L. formosus var. elatus |
Name authority | Lindley: Bot. Reg. 13: plate 1109. (1827) | I. M. Johnston: Bull. S. Calif. Acad. Sci. 17: 63. (1918) |
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