Lupinus excubitus |
Lupinus ludovicianus |
|
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grape lupine, grape soda lupine, guard lupine |
San Luis lupine, San Luis obispo county lupine |
|
Habit | Shrubs, 10–20 dm, densely silver appressed-hairy. | Herbs, perennial, 3–6 dm, woolly-tomentose. |
Stems | erect, branched. |
decumbent or erect, branched just above ground, hairs less than 1 mm, not sharp or stiff. |
Leaves | cauline; stipules 5–20 mm; petiole 4–10 cm; leaflets 7–9, blades 5–50 × 4–7 mm, adaxial surface densely pubescent, silver-hairy. |
cauline, clustered at base; stipules 7–12 mm; petiole 5–12 cm; leaflets 5–9, blades 15–40 × 5–12 mm, adaxial surface densely tomentose to woolly, hairs ± spreading. |
Racemes | 10–70 cm, rachis persistent; flowers whorled or not. |
10–40 cm; flowers ± whorled or not. |
Peduncles | 7–20 cm; bracts deciduous, 8–9 mm. |
stout, 6–10 cm; bracts deciduous, 7–8 mm. |
Pedicels | 4–6 mm. |
2–5 mm. |
Flowers | with distinctive sweet smell, 10–13 mm; calyx 6–8 mm, bulge or spur 0–1 mm, abaxial lobe entire or 3-toothed, adaxial lobe deeply notched; corolla violet to lavender, banner patch bright yellow, turning purple, banner usually hairy abaxially, keel usually ± lobed proximally, abaxial margins glabrous, adaxial margin ciliate middle to tip. |
10–15 mm; calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 6–8 mm, adaxial lobe deeply notched, 6–7 mm; corolla bluish to purple, banner patch yellow turning purple to white, banner well reflexed-recurved at or proximal to midpoint, this 3.5–6 mm proximal to apex, banner glabrous or ± hairy abaxially, lower keel margins glabrous, adaxial margin ciliate middle to tip. |
Legumes | 3–5 cm, silky. |
2–3 cm, hairy. |
Cotyledons | deciduous, petiolate. |
|
Seeds | 5–8, mottled yellow-brown with lateral lines. |
3 or 4, mottled grayish, 4–7 mm. |
Coty | -ledons deciduous, petiolate. |
|
Lupinus excubitus |
Lupinus ludovicianus |
|
Phenology | Flowering Apr–Jun. | Flowering Apr–Jul. |
Habitat | Desert slopes, washes. | Open, grassy areas, on limestone and sandstone, oak woodlands. |
Elevation | (700–)1200–2700 m. ((2300–)3900–8900 ft.) | 50–600 m. (200–2000 ft.) |
Distribution |
CA; Mexico (Baja California)
|
CA |
Discussion | Lupinus excubitus is known from Inyo to San Bernardino counties in the Mojave Desert, desert mountains, and southern Sierra Nevada east of the crest (transmontane). Circumscriptions of Lupinus excubitus have been diverse. See discussion under 32. L. albifrons, under which many varieties now have been treated as synonyms. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus ludovicianus is known only from San Luis Obispo County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Name authority | M. E. Jones: Contr. W. Bot. 8: 26. (1898) | Greene: Bull. Calif. Acad. Sci. 1: 184. (1885) |
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