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Brewer's lupine, Matted lupine

Habit Herbs or subshrubs, perennial, to 2 dm, matted or tufted, silvery-silky.
Stems

prostrate, branched, base ± woody.

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.

Racemes

dense, 1–10 cm;

flowers whorled.

Peduncles

1–3(–8) cm;

bracts deciduous, 3–5 mm.

Pedicels

1–3(–4) 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.

Legumes

1–2 cm, silky.

Cotyledons

deciduous, petiolate.

Seeds

3 or 4, mottled tan, brown, 3–4 mm.

Lupinus breweri

Distribution
from USDA
w United States
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

(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.
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. 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
Subordinate taxa
L. breweri var. breweri, L. breweri var. bryoides, L. breweri var. grandiflorus
Name authority A. Gray: Proc. Amer. Acad. Arts 7: 334. (1868)
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