Flora of North America species comparison

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Lupinus brevicaulis
Lupinus brevicaulis

sand lupine, short stem blue lupine, short-stem lupine
Habit Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm.
Stems

very short, tufted, branched.
Leaves

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

dense, 3–16-flowered, 1–8 cm;

flowers spirally arranged, crowded.
Peduncles

1–8(–10) cm;

bracts persistent, straight, 2–3 mm.
Pedicels

0.3–1.5 mm.
Flowers

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

not undulate, 1 cm, thinly pilose to coarsely hirsute.
Cotyledons

persistent, disclike, sessile.
Seeds

1 or 2, smooth.

Lupinus brevicaulis
Phenology Flowering spring.
Habitat Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite.
Elevation 300–2400 m. (1000–7900 ft.)
Distribution
from FNA
AZ; CA; CO; NM; NV; OR; UT; WY; Mexico (Chihuahua, Sonora)
[WildflowerSearch map]
[BONAP county map]
Discussion

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.
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. 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. 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
Name authority S. Watson: Botany (Fortieth Parallel), 53, plate 7, figs. 1–4. (1871)
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Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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