summer lupine

Lupinus formosus var. formosus

Member of summer lupine (Lupinus formosus)
bush lupine complex (complex Lupinus albifrons)
lupines (genus Lupinus)
legume family (family Fabaceae)
dicots (class Magnoliopsida)
pale blue, purple, pale purple in flowering plants

Except for extremely rare examples that I don't expect to encounter, there are no other wild members of this species in the bay area.

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• habit: perennial herb 20–80 cm, densely hairy to tomentose, gray to silver; rhizomes 3–7 mm diam
• stem: spreading to erect, 3–4 mm diam
• leaf: cauline; stipules 4–15 mm; petiole 2–7 cm; leaflets 7–9, 25–70 mm; hairy, green-gray to silver
• inflorescence: 10–30 cm, flowers ± whorled; peduncle 3–7 cm; pedicels 3–7 mm; bract 4–14 mm
• flower: 10–14 mm; calyx upper lip 7–11 mm, 2-toothed, lower 8–12 mm, entire to 3-toothed; petals purple, banner back glabrous, spot white or not
• keel upcurved, glabrous
• common

Toxicity of blue bonnet, lupine (Lupinus spp.):
4 – Ingestion of these plants, especially in large amounts, is expected to cause serious effects to the heart, liver, kidneys or brain. If ingested in any amount, call the poison center immediately.

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Chris’s observations: 11 (9 are research grade)

Locations:

• El Corte de Madera OSP: 2
• Henry Coe SP: 2
• Coal Creek OSP
• Ed R. Levin CP
• Joseph D. Grant CP
• Long Ridge OSP
• Purisima Creek Redwoods OSP
• Sanborn CP
• Skyline Ridge OSP

Months:

• Apr.: 1
• May: 1
• Jun.: 3
• Jul.: 1
• Aug.: 1
• Sep.: 2
• Oct.: 2

For more details, use advanced search.

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Not all sites include this taxon:

• Lupinus formosus var. formosus → iNaturalist – Calflora – CalPhotos – Jepson eFlora
• not yet listed → FNA

Bay Area species: iNaturalist – Calflora