big pod lupine

Lupinus pachylobus

Member of lupines (genus Lupinus)
legume family (family Fabaceae)
dicots (class Magnoliopsida)
purple in flowering plants

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• habit: annual 15–40 cm, hairy [dense & bristly, especially on the calyx]
• leaf: petiole 4–8 cm; leaflets generally 7, 20–25 mm, 2–5 mm wide
• inflorescence: 1–6 cm, flowers generally whorled; peduncle 3–12 cm; pedicels 1–2.5 mm; bract ± 6 mm
• [may have fewer whorls than miniature lupine (Lupinus bicolor)]
• flower: 7–9 mm; calyx 4.5–6 mm, lips ± equal; petals blue, banner longer than wide, spot white, in age dark magenta
• keel blunt, glabrous
• Mt. Diablo [and rarely elsewhere?]

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: none

Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora