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miniature lupine, two-color lupine

Habit Plants annual, 1–5 dm.
Stems

ascending or erect, pubescent.

Leaves

cauline;

leaflets 5–8, 10–40 × 1–5 mm, linear to oblanceolate;

tips acute;

surfaces pubescent to sericeous;

petioles 12–55 mm.

Inflorescences

1–9 cm;

peduncles 2–6.5 cm;

pedicels 1–3 mm.

Flowers

calyces 4–8 mm, not spurred;

lips equal to subequal;

corollas 5–9 mm, usually blue, rarely light blue, pink, or white, sometimes with patches of yellow;

banners usually typical type, sometimes weakly cupped or pinched; spot white, purple, or absent.

Fruits

10–25 mm, villous.

Seeds

3–6.

Lupinus truncatus

Lupinus bicolor

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Pastures, meadows, roadsides, open forests. Flowering Mar–Jul. 0–1000 m. Casc, Col, CR, ECas, Est, Sisk, WV. CA, WA; north to British Columbia, south to Mexico. Native.

Source Flora of Oregon, volume 2, page 700
Paul Severns, Stephen Meyers, Christopher Royce
Sibling taxa
L. affinis, L. albicaulis, L. albifrons, L. arboreus, L. arbustus, L. arbustus x Lupinus oreganus, L. arbustus x Lupinus sericeus, L. argenteus, L. bicolor, L. brevicaulis, L. breweri, L. latifolius, L. lepidus, L. leucophyllus, L. leucophyllus x Lupinus sericeus, L. littoralis, L. luteolus, L. microcarpus, L. nevadensis, L. onustus, L. oreganus, L. polyphyllus, L. pusillus, L. rivularis, L. sabinianus, L. sericeus, L. sulphureus, L. tracyi, L. uncialis
L. affinis, L. albicaulis, L. albifrons, L. arboreus, L. arbustus, L. arbustus x Lupinus oreganus, L. arbustus x Lupinus sericeus, L. argenteus, L. brevicaulis, L. breweri, L. latifolius, L. lepidus, L. leucophyllus, L. leucophyllus x Lupinus sericeus, L. littoralis, L. luteolus, L. microcarpus, L. nevadensis, L. onustus, L. oreganus, L. polyphyllus, L. pusillus, L. rivularis, L. sabinianus, L. sericeus, L. sulphureus, L. tracyi, L. uncialis
Synonyms Lupinus polycarpus, Lupinus bicolor var. bicolor, Lupinus bicolor var. microphyllus, Lupinus bicolor var. tridentatus, Lupinus micranthus, Lupinus nanus, Lupinus nanus var. apricus
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