Lupinus hyacinthinus |
Lupinus brevicaulis |
|
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hyacinth lupine, San Jacinto lupine |
sand lupine, short stem blue lupine, short-stem lupine |
|
Habit | Herbs, perennial, 4–10 dm, gray becoming green, sparsely hairy. | Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. |
Stems | erect, unbranched or branched distally. |
very short, tufted, branched. |
Leaves | cauline; stipules not leaflike, green to silvery, 5–16 mm; petiole 3–6 cm; leaflets 7–12, blades 30–80 × 4–8 mm, adaxial surface sparsely pubescent. |
cauline, crowded near base; stipules well developed; petiole 1–6 cm; leaflets (3 or)5–9, blades 8–20 × 2–9 mm, adaxial surface glabrous. |
Racemes | 4–22 cm; flowers ± whorled. |
dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. |
Peduncles | 3–12 cm; bracts deciduous, 5–9 mm. |
1–8(–10) cm; bracts persistent, straight, 2–3 mm. |
Pedicels | 2–6 mm. |
0.3–1.5 mm. |
Flowers | 13–16 mm; calyx bulge or spur 0–1 mm, abaxial lobe entire or 3-toothed, 7–11 mm, adaxial lobe 2-toothed, 6–10 mm; corolla light blue to purple, banner patch yellowish to white, banner glabrous abaxially, keel upcurved, glabrous, banner ovate, wings wide, covering keel tip. |
6–8 mm; calyx abaxial lobe entire or shallowly cleft, ± 6 mm, adaxial lobe 2-toothed, 3 mm, less than 1/2 as long as abaxial; corolla bright blue, banner spot white or yellow, keel glabrous. |
Legumes | 3–4 cm, silky. |
not undulate, 1 cm, thinly pilose to coarsely hirsute. |
Cotyledons | deciduous, petiolate. |
persistent, disclike, sessile. |
Seeds | 3–7, beige, speckled brown, 4–6 mm. |
1 or 2, smooth. |
Lupinus hyacinthinus |
Lupinus brevicaulis |
|
Phenology | Flowering Jun–Aug. | Flowering spring. |
Habitat | Dry slopes, under yellow pines and white fir. | Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite. |
Elevation | 2000–3500 m. (6600–11500 ft.) | 300–2400 m. (1000–7900 ft.) |
Distribution |
CA; Mexico (Baja California)
|
AZ; CA; CO; NM; NV; OR; UT; WY; Mexico (Chihuahua, Sonora)
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Discussion | Lupinus hyacinthinus is found in southern California in the San Gabriel, San Jacinto, and Santa Rosa mountains and on the Sierra San Pedro Mártir in Baja California. It is distinguished from its close relatives by its larger flowers in combination with green (versus gray or dull green) leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus brevicaulis resembles L. flavoculatus except that its flowers are smaller. (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. albicaulis var. hyacinthinus, L. andersonii var. sublinearis, L. formosus var. hyacinthinus | |
Name authority | Greene: Leafl. Bot. Observ. Crit. 2: 85. (1910) | S. Watson: Botany (Fortieth Parallel), 53, plate 7, figs. 1–4. (1871) |
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