Lupinus sericeus |
Lupinus nevadensis |
|
---|---|---|
Pursh's silky lupine, silky lupine |
Nevada lupine |
|
Habit | Herbs, perennial, (2–)4–14 dm, silky-strigose to finely hirsute (with both short and long hairs). | Herbs, perennial, 1–4 dm, long-hairy. |
Stems | erect, ascending, or decumbent, branched distally. |
erect, tufted, unbranched. |
Leaves | mostly cauline, basal normally absent; stipules 5–7 mm; petiole 2–14 cm (longer proximally becoming shorter distally); leaflets 5–13, blades 10–60(–90) × 3–11(–19) mm, surfaces usually silky, rarely thinly silky appearing glabrous abaxially. |
basal and cauline; stipules 8–10 mm; basal petioles to 14 cm, cauline to 4 cm; leaflets 6–10, blades 20–50 × 4–6 mm, adaxial surface pubescent. |
Racemes | 12–25(–42) cm; flowers whorled or spirally arranged. |
5–17 cm; flowers spirally arranged. |
Peduncles | 2–4 cm; bracts subdeciduous, 5–8 mm. |
3–6 cm; bracts deciduous, 4–5 mm. |
Pedicels | 2–5(–6) mm. |
4–8 mm. |
Flowers | 8–14(–18) mm; calyx sometimes slightly saccate, abaxial lobe subentire or entire, 5 mm, adaxial lobe 2-fid, 6 mm; corolla pale purple to bright blue, sometimes yellowish or whitish, banner spot white to yellow turning brown, banner well reflexed-recurved at or proximal to midpoint, this 3.5–6 mm proximal to apex, keel moderately curved, banner silky-hairy abaxially, adaxial keel ciliate almost full length, not reaching tip. |
10–12 mm; calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 4–5 mm, adaxial lobe 2-toothed, 3–4 mm; corolla blue, banner patch white to yellowish, banner glabrous abaxially, keel strongly upcurved, lower keel margins glabrous, adaxial margin ciliate. |
Legumes | 2–3.7 cm, densely pilosulous. |
2.5–4 cm, densely hairy. |
Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
Seeds | (2 or)3–5(–7). |
3–4. |
Lupinus sericeus |
Lupinus nevadensis |
|
Phenology | Flowering May–Aug. | Flowering Apr–Aug. |
Habitat | Meadows, dry banks, bunchgrass prairies, sagebrush scrub, openings in conifer forests. | Hillsides, valleys, with sage-brush, Great Basin scrub, pinyon-juniper woodlands. |
Elevation | 200–3100 m. (700–10200 ft.) | 1000–3000 m. (3300–9800 ft.) |
Distribution |
AZ; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
|
CA; NV; OR
|
Discussion | Lupinus sericeus is widespread and common from the southern interior mountains in British Columbia and southwestern Alberta southward to eastern Washington and eastern Oregon to northern New Mexico and northwestern Arizona, northeastern Nevada through Idaho and Wyoming to the Black Hills in South Dakota. Plants with creamy or white flowers in southeastern Washington are known as subsp. asotinensis. D. Isely (1998) recognized this taxon based on petal color and distribution, but since white and yellow flowers occur throughout the range of Lupinus sericeus, it is not formally recognized here. Lupinus pureriae C. P. Smith may be a hybrid derived in part from L. sericeus, according to an annotation by D. B. Dunn on the holotype (CAS0008254). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus nevadensis is found in Lassen, Mono, and northern Inyo counties in eastern California, Washoe County southward to Mineral County in western Nevada, and Harney County in southern Oregon. (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. aeger-ovium, L. aliumbellatus, L. alpicola, L. amniculi-salicis, L. amplus, L. arceuthinus, L. bakeri, L. bakeri subsp. amplus, L. barbiger, L. blankinshipii, L. buckinghamii, L. comatus, L. diaboli-septem, L. dichrous, L. falsocomatus, L. fikerianus, L. flavicaulis, L. flexuosus, L. garfieldensis, L. habrocomus, L. hermanworkii, L. hiulcoflorus, L. huffmannii, L. jonesii, L. larsonianus, L. leucopsis, L. marianus, L. ornatus, L. puroviridus, L. quercus-jugi, L. ramosus, L. rickeri, L. sericeus subsp. asotinensis, L. sericeus var. asotinensis, L. sericeus var. barbiger, L. sericeus var. fikerianus, L. sericeus var. flexuosus, L. sericeus subsp. huffmannii, L. sericeus var. jonesii, L. sericeus var. wallowensis, L. spiraeaphilus, L. subulatus, L. tuckerianus | |
Name authority | Pursh: Fl. Amer. Sept. 2: 468. (1813) | A. Heller: Muhlenbergia 6: 107, fig. 17. (1910) |
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