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long lupine, Peirson's lupine

Mohave lupine, Mojave lupine, Mojave royal lupine

Habit Herbs, perennial, 3–6 dm, silver-silky. Herbs, annual, 1–3 dm, usually glabrous, sometimes sparsely pubescent when young, rarely at anthesis, hairs less than 0.5 mm.
Stems

erect, branched from just above ground.

basally branched or unbranched.

Leaves

cauline, clustered at base, ± fleshy;

stipules 15–20 mm;

petiole 2–15 cm;

leaflets 5–8, blades widely oblanceolate, 25–70 × 10–30 mm, surfaces silver-silky.

basal;

petiole 2–12 cm;

leaflets 5–9, blades bright green, 8–24 × 3–10 mm, adaxial surface glabrous.

Racemes

1–1.5 cm;

flowers ± whorled.

4–25 cm;

flowers spirally arranged.

Peduncles

1–2.5 cm;

bracts deciduous, 5–7 mm.

hollow, 6–15 cm;

bracts persistent, straight, 2–4 mm, tips sparsely ciliate.

Pedicels

1–2 mm.

3–7 mm.

Flowers

10–12 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire, 5–7 mm, adaxial lobe obscurely 2-toothed, 4–6 mm;

corolla yellow, banner usually hairy abaxially, lower keel margins glabrous, adaxial margin ciliate middle to tip.

7–10 mm;

calyx lobes sometimes ciliate at tips, abaxial lobe entire, 4–5 mm, adaxial lobe rounded or shallowly 2-toothed, 3–3.5 mm;

corolla deep blue-purple, banner spot white or yellow becoming magenta, keel glabrous.

Legumes

3–4 cm, silky.

1.5–2.5 cm, adaxial suture undulate and ciliate with long dense hairs, sides with a few short hairs becoming scaly on drying.

Cotyledons

deciduous, petiolate.

persistent, disclike, sessile.

Seeds

3–5.

2–6, ridged.

Lupinus peirsonii

Lupinus odoratus

Phenology Flowering Apr–Jun. Flowering spring.
Habitat Gravelly or rocky areas, Joshua tree woodland, montane coniferous forests, pinyon and juniper woodlands. Creosote bush scrub, Joshua tree woodland, sandy desert flats, open areas.
Elevation 1000–2500 m. (3300–8200 ft.) 500–1600 m. (1600–5200 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; NV
[WildflowerSearch map]
[BONAP county map]
Discussion

Lupinus peirsonii is known only from the San Gabriel Mountains in Los Angeles County.

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

The fresh flowers of Lupinus odoratus smell like violets. Pilose plants can be confused with L. flavoculatus.

Lupinus odoratus occurs in the Mojave Desert region of California, northward to Inyo and Mono counties, and eastward into southern Nevada and Mohave County, Arizona.

The name Lupinus odoratus A. Heller is to be proposed for conservation against L. odoratus F. Dietrich (1836), a likely synonym of L. nanus.

(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
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. obtusilobus, L. odoratus, L. onustus, L. oreganus, L. pachylobus, L. padrecrowleyi, 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
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. obtusilobus, 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. odoratus var. pilosellus
Name authority H. Mason: Madroño 1: 187. (1928) — (as peirsoni) A. Heller: Muhlenbergia 2: 71. (1905)
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