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Brewer's lupine, Matted lupine

arroyo lupine, hollowleaf annual lupine, succulent lupine

Habit Herbs or subshrubs, perennial, to 2 dm, matted or tufted, silvery-silky. Herbs, annual, sometimes persisting more than one season, (1–)2–10 dm, fleshy, sparsely pubescent.
Stems

prostrate, branched, base ± woody.

ascending or erect, branched or unbranched, usually succulent.

Leaves

cauline, clustered near base;

stipules 2–5 mm;

petiole 1–5(–6) cm;

leaflets 5–10, blades 3–20 × 2–6 mm, adaxial surface pubescent.

cauline, may be crowded at base on new growth;

petiole 6–15 cm;

leaflets 7–9, blades 20–60 × 7–20 mm, adaxial surface glabrous.

Racemes

dense, 1–10 cm;

flowers whorled.

15–25 cm;

flowers whorled.

Peduncles

1–3(–8) cm;

bracts deciduous, 3–5 mm.

5–9 cm;

bracts deciduous, 3–5 mm.

Pedicels

1–3(–4) mm.

3–7 mm.

Flowers

4–11 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire or 3-toothed, 4–6 mm, adaxial lobe 2-toothed, 4–7 mm;

corolla blue to violet, banner patch white or yellow, banner glabrous or densely hairy abaxially, keel straight, abaxial margins glabrous, adaxial margin glabrous or ciliate.

12–18 mm;

calyx 4–7 mm, lobes ± equal, abaxial lobe entire, adaxial lobe cleft;

corolla usually blue-purple, rarely white, lavender, or pink, banner spot white, becoming magenta, upper wing margins ciliate near claw, lower and upper keel margins ciliate near claw.

Legumes

1–2 cm, silky.

3.5–5 cm, coarsely pubescent to tomentose.

Cotyledons

deciduous, petiolate.

deciduous, petiolate.

Seeds

3 or 4, mottled tan, brown, 3–4 mm.

6–9.

2n

= 48.

Lupinus breweri

Lupinus succulentus

Phenology Flowering late winter–late spring (Feb–May).
Habitat Open or disturbed areas, roadbanks.
Elevation 0–1300 m. (0–4300 ft.)
Distribution
from USDA
w United States
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; Mexico (Baja California, Baja California Sur)
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

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

Lupinus succulentus occurs widely throughout California except in the Great Basin and desert regions and extends into northern Mexico; it is introduced in Arizona. It may occasionally persist more than one season in Californian North Coast locations.

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

Key
1. Banner silky abaxially, keel strongly ciliate.
var. grandiflorus
1. Banner glabrous abaxially, keel glabrous.
→ 2
2. Flowers 6–9 mm; leaflet blades 6–20 mm.
var. breweri
2. Flowers 4–6(–7) mm; leaflet blades 3–5 mm.
var. bryoides
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. 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
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. 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. sulphureus, L. texensis, L. tidestromii, L. tracyi, L. truncatus, L. uncialis, L. villosus, L. westianus
Subordinate taxa
L. breweri var. breweri, L. breweri var. bryoides, L. breweri var. grandiflorus
Synonyms L. succulentus var. brandegeei, L. succulentus var. layneae
Name authority A. Gray: Proc. Amer. Acad. Arts 7: 334. (1868) Douglas ex K. Koch: Wochenschr. Vereines Beford. Gartenbaues Konigl. Preuss. Staaten 4: 277. (1861)
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