Lupinus diffusus |
Lupinus guadalupensis |
|
---|---|---|
Oak Ridge lupine, skyblue lupine |
Guadalupe Island lupine |
|
Habit | Herbs, usually perennial, sometimes annual or biennial, 2–8 dm, densely silky-pubescent, silvery becoming rusty or tawny. | Herbs, annual, 2–6 dm, sparsely pubescent. |
Stems | decumbent, spreading, many branched. |
erect, usually branched, sometimes unbranched. |
Leaves | basal, clustered; stipules 20–150 mm; petiole 2.5–10 cm; leaflet 1, blades 40–120 × 18–33 mm, adaxial surface densely sericeous or strigulose. |
cauline; petiole 3–7 cm; leaflets 7–9, blades 20–50 × 3–5 mm, adaxial surface sparsely pubescent. |
Racemes | 8–30 cm; flowers whorled. |
10–25 cm; flowers usually whorled, sometimes spirally arranged. |
Peduncles | 3–4 cm; bracts deciduous, 4–8 mm. |
5–8 cm; bracts deciduous, 8–10 mm. |
Pedicels | 1–4 mm. |
4–5 mm. |
Flowers | 11–15 mm; calyx abaxial lobe entire, 5–10 mm, adaxial lobe 3-fid with 2 linear laterals, 4–8 mm; corolla light to deep blue, limb centrally white at base, banner spot white to cream, glabrous abaxially, keel glabrous. |
10–12 mm; calyx 6–10 mm, lobes ± equal, abaxial lobe entire, adaxial lobe deeply cleft; corolla blue, banner spot white, upper keel margins with few cilia near apex, banner as wide as long or wider. |
Legumes | 3–5 cm, appressed villous to sericeous. |
3–6 × 0.8–1 cm, densely pubescent. |
Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
Seeds | 4–7, gray mottled black, 4 mm. |
6–8. |
Lupinus diffusus |
Lupinus guadalupensis |
|
Phenology | Flowering Mar–May (year-round). | Flowering spring. |
Habitat | Sandhills, sand pine scrub, open woodlands. | Sandy or gravelly areas. |
Elevation | 0–50 m. (0–200 ft.) | 0–500 m. (0–1600 ft.) |
Distribution |
AL; FL; GA; MS; NC; SC
|
CA; Mexico (Baja California) |
Discussion | Lupinus diffusus differs from the other unifoliolate species in its much shorter pubescence and banners with a white eyespot. Lupinus cumulicola represents peninsular Florida forms that have strongly ascending foliose stems and sometimes broader leaves than usual. Some plants of L. diffusus from southern Florida have a vesture of hairs that approach those of L. villosus in length. Lupinus diffusus seeds are known to be toxic (D. J. Wagstaff 2008). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus guadalupensis is known from San Clemente Island in California and Guadalupe Island in Mexico. It intergrades with L. nanus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | L. cumulicola | L. moranii |
Name authority | Nuttall: Gen. N. Amer. Pl. 2: 93. (1818) | Greene: Bull. Calif. Acad. Sci. 1: 184. (1885) |
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