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bluntlobe lupine, ornate lupine, satin lupine

Habit Herbs, perennial, 1.5–3 dm, appressed-silvery-silky; with woody, branching root crown.
Stems

decumbent, ascending, or erect, clustered, usually unbranched.

Leaves

cauline;

stipules 7–14 mm;

petiole 2–5 cm;

leaflets 6 or 7, blades 20–50 × 4–8 mm, adaxial surface hairs silvery-silky.

Racemes

dense, 3–7 cm;

flowers ± whorled.

Peduncles

(1–)2–4(–5) cm;

bracts 3–4 mm.

Pedicels

2–5 mm.

Flowers

11–13 mm;

calyx 6–7 mm, bulge or spur 0–1 mm, abaxial lobe 3-toothed, adaxial lobe 2-toothed;

corolla blue to lilac, banner patch yellow, banner well reflexed-recurved at or proximal to midpoint, this 3.5–6 mm proximal to apex, banner broader than long, hairy abaxially, lower keel margins glabrous, adaxial margin ciliate.

Legumes

2.5–4 cm, silky.

Cotyledons

deciduous, petiolate.

Seeds

4–5, mottled brown, 3–4 mm.

Lupinus obtusilobus

Phenology Flowering Jun–Sep.
Habitat Gravelly summits, red fir, subalpine forests.
Elevation 1500–3500 m. (4900–11500 ft.)
Distribution
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
Discussion

Lupinus obtusilobus is known in California from the North Coast Ranges, Klamath Ranges, Cascade Ranges, and northern Sierra Nevada (south to Nevada County), and in the Carson Range in eastern California and western Nevada.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lupinus
Sibling taxa
L. adsurgens, L. affinis, L. albicaulis, L. albifrons, L. andersonii, L. angustiflorus, L. antoninus, L. apertus, L. arboreus, L. arbustus, L. arcticus, L. argenteus, L. arizonicus, L. benthamii, L. bicolor, L. brevicaulis, L. breweri, L. cervinus, L. chamissonis, L. citrinus, L. concinnus, L. constancei, L. covillei, L. croceus, L. dalesiae, L. diffusus, L. duranii, L. elatus, L. elmeri, L. excubitus, L. flavoculatus, L. formosus, L. fulcratus, L. gracilentus, L. grayi, L. guadalupensis, L. havardii, L. hirsutissimus, L. huachucanus, L. hyacinthinus, L. kingii, L. kuschei, L. lapidicola, L. latifolius, L. lepidus, L. leucophyllus, L. littoralis, L. longifolius, L. ludovicianus, L. luteolus, L. magnificus, L. malacophyllus, L. microcarpus, L. nanus, L. neomexicanus, L. nevadensis, L. nipomensis, L. nootkatensis, L. odoratus, L. onustus, L. oreganus, L. pachylobus, L. padrecrowleyi, L. peirsonii, L. perennis, L. polyphyllus, L. pratensis, L. pusillus, L. rivularis, L. sabineanus, L. sericatus, L. sericeus, L. shockleyi, L. sierrae-blancae, L. sparsiflorus, L. spectabilis, L. stiversii, L. subcarnosus, L. succulentus, L. sulphureus, L. texensis, L. tidestromii, L. tracyi, L. truncatus, L. uncialis, L. villosus, L. westianus
Synonyms L. ornatus var. obtusilobus
Name authority A. Heller: Muhlenbergia 8: 115, fig. 22. (1912)
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